A team of researchers at McMaster University have produced a new plant-based, edible scaffold for cultivated meat that

Reframing subjective policy issues as questions of objective “science” makes it easier to justify relying on “experts” for policy answers.

Source

New research from the Natural History Museum at the University of Oslo suggests ichthyosaurs’ rib cages may have done a job modern whale ribs don’t: acting as ballast to help them dive.

The post Ichthyosaurs Had Surprisingly Dense Ribs, New Study Finds appeared first on Sci.News: Breaking Science News.

Around 11,000 years ago, communities in southwest Asia began one of the most consequential experiments in human history: growing their own food. Wild cereals, legumes and fruit-bearing plants were gradually brought under human management, setting in motion the transition from mobile hunter-gatherer lifeways to farming societies. For decades, archaeologists have assumed that one of the earliest signs of this transformation was an increase in cereal grain size. A new study, however, suggests that some of the biggest grains found at the dawn of agriculture may not have been genetically altered at all. They may simply have grown in wetter conditions.

The findings, published in the Proceedings of the National Academy of Sciences, challenge a central assumption about how cereal domestication began. Researchers studying charred barley and emmer wheat grains from the Early Neolithic sites of el-Hemmeh and Sharara in the southern Levant found that the plants still possessed fully wild characteristics during the earliest phases of the Pre-Pottery Neolithic. Their ears had brittle rachises, the structures that naturally break apart when mature, allowing seeds to disperse in the wild. There was no evidence of the tough, non-shattering rachis that later became one of the defining features of domesticated cereals.

The absence of non-shattering forms is significant because a tough rachis makes harvesting far more efficient. In wild cereals, the rachis fractures as the plant ripens, scattering seeds before people can collect them. A mutation that keeps the grains attached would have offered major advantages to human harvesters and could then have spread through repeated cultivation and replanting. Researchers have therefore often treated the appearance of non-shattering cereals as a key marker of domestication. Grain size, by contrast, has frequently been interpreted as an earlier signal that people were already selecting plants through cultivation.

At el-Hemmeh and Sharara, however, grain size told a more complicated story. Barley and emmer wheat remained morphologically wild, yet their grains varied dramatically. Some were as small as typical wild cereals, while others fell within the size range commonly associated with domesticated plants. If large grains were the product of genetic selection caused by systematic tillage, the researchers expected to find other evidence of intensive cultivation. Instead, the ecological evidence pointed toward relatively low-disturbance environments.

The team examined the weed species preserved alongside the cereal remains. Weeds are valuable archaeological indicators because different plants thrive under different environmental conditions. Species associated with heavily tilled or frequently disturbed soils were not dominant in the assemblages from these early sites. This weakened the argument that repeated ploughing or intensive soil preparation had already created strong selection for larger seeds. The researchers began looking for another explanation for the striking variation in grain size.

Their answer came from stable carbon isotope analysis. Carbon exists in several naturally occurring forms, or isotopes, and plants incorporate these isotopes in ways that are influenced by their growing conditions. In cereals, the stable carbon isotopic composition of a grain can reflect the balance between carbon uptake and water loss during photosynthesis. When plants experience water stress, changes in gas exchange through their leaves alter the carbon isotope signal recorded in their tissues. By measuring this signal in ancient grains, scientists can reconstruct aspects of the moisture conditions under which the plants grew.

The results showed a strong relationship between grain size and water availability. Barley grains that reached domestic-sized dimensions had carbon isotope values indicating that they developed under wetter conditions. Smaller, wild-sized grains carried signatures consistent with considerably drier growth environments. The difference suggests that environmental moisture, rather than inherited genetic change, was responsible for much of the early increase in cereal grain size. In other words, the same wild plant population could produce grains of very different sizes depending on the conditions it experienced during development.

This phenomenon is known as developmental plasticity: the ability of a single genotype to produce different physical traits in response to the environment. It is widespread in plants and can affect characteristics such as height, leaf area, flowering time and seed production. In the Early Holocene southern Levant, developmental plasticity may have created the visual impression that cereals were already becoming domesticated. People collecting and replanting the largest grains might eventually have generated genetic selection, but the initial size increase itself appears to have been ecological rather than evolutionary.

“Environmental conditions provided a much better explanation for the observed variation in grain size than genetic selection under tillage,” said Dr Jade Whitlam of the University of Oxford, who led the study. The researchers propose that genetic selection for larger grains may have occurred later than previously thought, perhaps after selection for non-shattering rachises had already begun. This reverses the sequence often assumed in models of domestication and places greater emphasis on the complex interaction between climate, plant biology and human harvesting practices.

The study also reframes the origins of agriculture as a gradual process of niche construction rather than a sudden decision to domesticate plants. Early communities altered their relationship with wild vegetation through harvesting, protection, transport and repeated use of particular landscapes. These practices may have changed plant populations long before crops displayed unmistakable domestication traits. By combining archaeobotany, weed ecology and stable isotope evidence, the researchers argue that the first steps toward agriculture were not necessarily driven by deliberate genetic engineering of crops, but by prolonged human management operating within a variable environment. The result is a more nuanced picture of farming’s origins—one in which climate could temporarily make wild cereals look domesticated before their genomes caught up.

Subject of Research: The environmental and biological processes that influenced cereal grain size and plant domestication in the Early Holocene southern Levant.

Article Title: Developmental plasticity under human management shaped cereal evolution prior to domestication in the Early Holocene southern Levant

News Publication Date: 4-Aug-2026

Web References: https://www.eurekalert.org/multimedia/1146086

References: Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.2535274123

Image Credits: Jerome Poulalier, www.jerome-poulalier-photography.com

Keywords: Archaeology, archaeobotany, cereal domestication, agriculture, Neolithic, Early Holocene, southern Levant, barley, emmer wheat, stable carbon isotopes, developmental plasticity, plant evolution, climate, hunter-gatherers

Neanderthals vanished roughly 42,000 years ago, but a piece of their biology appears to be quietly at work in some people today, according to a new study led by scientists from the Max Planck Institute for Evolutionary Anthropology.

The post Neanderthal Gene Still Shapes Muscle and Jaws in Some Living Humans appeared first on Sci.News: Breaking Science News.

Apple in China occupies a position unlike the company’s presence in any other country. China is simultaneously a major consumer market, a critical manufacturing center, an extensive developer economy and the home of Apple’s most determined hardware competitors.

That combination creates an opportunity few technology companies can ignore. China has hundreds of millions of affluent mobile users, a strong appetite for premium devices and a digital economy built around smartphones.

It also creates unusual complexity. Apple must compete with Huawei, Xiaomi, Oppo and Vivo while satisfying Chinese regulations, navigating tensions between Beijing and Washington and reducing its manufacturing dependence without damaging the supplier network that helped make the iPhone possible.

The latest market figures show why Apple cannot treat China as a business it has already lost. IDC estimated that Apple captured 18.1 percent of Chinese smartphone shipments during the second quarter of 2026, placing it second behind Huawei at 22.6 percent.

Apple’s shipments increased by 24.4 percent from the previous year even as the wider Chinese smartphone market contracted. The recovery demonstrated that Chinese demand for the iPhone remains substantial when product design, storage, performance and pricing align with consumer expectations.

The same figures also show why the position can never be considered secure. Huawei remains ahead, local brands respond quickly and a few percentage points can separate several major vendors.

Apple in China Still Has Room to Grow

China is already one of Apple’s largest markets, but its scale means that even established product categories contain room for expansion.

The country has a large premium smartphone segment, extensive 5G coverage and consumers accustomed to using mobile devices for communication, payments, shopping, entertainment, transport and work.

An iPhone purchase can also lead to AirPods, Apple Watch, iPad, Mac, iCloud storage and paid applications. The commercial opportunity is therefore larger than the initial handset transaction.

Apple’s strongest advantage is its integrated ecosystem. An iPhone can share passwords, photographs, messages and files with a Mac or iPad, while AirPods and Apple Watch extend the experience without requiring separate accounts and setup systems.

That continuity becomes more valuable as households accumulate devices. Replacing one iPhone is relatively easy. Leaving an ecosystem containing several products, purchased applications, cloud storage and shared family services involves greater friction.

Apple also benefits from a premium identity that remains recognizable in China. Local manufacturers now produce sophisticated flagship phones, but the iPhone continues to operate as both a personal computer and a luxury consumer product.

The importance of that status should not be exaggerated. Chinese buyers are technically informed and increasingly willing to support domestic brands. Brand recognition can attract attention, but it does not excuse weak features or an uncompetitive product cycle.

Recent iPhone Demand Shows the Opportunity

Apple’s 2026 recovery offers a useful example of how quickly its position can improve.

China’s smartphone shipments fell 4.3 percent during the second quarter as memory and component costs pushed several manufacturers toward higher prices. Apple and Huawei held prices more stable, giving buyers a reason to purchase while competing brands became more expensive.

The iPhone 17 generation also addressed several areas where Apple’s standard models had appeared conservative beside Chinese flagships. Stronger base specifications made the regular iPhone more competitive without requiring every customer to move into the Pro tier.

This matters in a market where consumers compare display technology, camera systems, storage, battery life, charging and AI features closely. Apple cannot depend entirely on iOS loyalty when domestic companies introduce visible hardware improvements at several price levels.

The rebound does not establish a permanent trend. Smartphone demand in China remains affected by economic confidence, upgrade cycles, government incentives and the timing of major shopping festivals.

Apple’s position can also look different according to the research firm and whether a report measures shipments or consumer sales. Quarterly rankings should be treated as evidence of momentum rather than a final judgment on the market.

The important signal is that Chinese consumers have not broadly rejected the iPhone. Demand can return rapidly when the product and price create a convincing upgrade.

Huawei Makes China Apple’s Hardest Market

Huawei gives Apple a competitor with advantages unavailable to most global smartphone manufacturers.

The company combines strong national recognition with advanced cameras, communications technology, custom chips, local services and an expanding HarmonyOS ecosystem. Its return to premium smartphones removed the opening Apple had gained when U.S. restrictions disrupted Huawei’s access to important components.

Huawei can also position its products as part of China’s technological self-reliance. That message carries commercial and political weight beyond a conventional comparison between two phones.

Apple must therefore compete against product quality and national sentiment simultaneously. An iPhone can offer strong performance and still lose a purchase to a domestic flagship viewed as technically capable and strategically important.

Xiaomi, Oppo and Vivo add different pressures. They move quickly across price categories, experiment with folding designs, adopt larger batteries and provide features adapted to local applications and buying habits.

Chinese phone makers also operate inside a retail and software environment they understand directly. They can build relationships with local platforms, carriers and commerce services without translating a global strategy into Chinese requirements.

Apple follows a more centralized product model. That consistency protects the identity of the iPhone, but it can make the company slower to answer features gaining popularity inside one country.

Services Depend on Local Rules

Apple in China is not only an iPhone business. The installed device base creates demand for applications, cloud storage, entertainment, subscriptions and digital purchases.

China has an enormous developer community producing games, commerce platforms, social services, education tools and productivity software. The App Store connects those developers with high-value iPhone and iPad customers.

The relationship is commercially important but politically complicated. Apple must operate the mainland App Store according to Chinese law, including rules affecting games, generative AI, communications services and content.

Applications available elsewhere may be absent from the Chinese storefront. Developers may also need licenses or regulatory approval before distributing certain categories of software.

Apple changed commission rates and related policies for the mainland China storefront in March 2026. The company described the adjustments as part of maintaining a strong business opportunity for Chinese developers.

Regulatory and developer pressure has not disappeared. Complaints involving commissions, distribution restrictions and payment policies continue to challenge Apple’s control of the platform.

The company cannot simply copy its response from another region. European rules focus heavily on alternative marketplaces and interoperability, while China combines competition concerns with content regulation, data localization and licensing requirements.

Every concession must therefore be designed for a distinct legal environment without fragmenting iOS into an unmanageable collection of regional systems.

China Is Also Part of the Product

Apple’s relationship with China extends far beyond the devices sold there.

For more than two decades, Apple and its manufacturing partners built a dense network of factories, component suppliers, engineers, logistics operators and toolmakers across the country.

That network does more than provide low-cost labor. It can place specialists from several suppliers near an assembly site, modify production lines quickly and increase output to enormous volumes during a product launch.

China’s infrastructure also supports the less visible stages of manufacturing. Components require precision tooling, testing equipment, chemicals, packaging, subassemblies and experienced quality-control teams before final assembly begins.

Apple has expanded iPhone production in India and moved parts of its Mac, iPad, Apple Watch and AirPods supply chains to countries including Vietnam. It is also increasing semiconductor and component commitments in the United States.

Those investments reduce the danger of relying on one country, but they do not recreate China’s complete manufacturing environment immediately.

A factory in another region may assemble an iPhone while still depending on Chinese machinery, materials, subcomponents or engineering support. Production diversification is therefore a gradual redistribution of individual stages rather than a clean departure.

Apple must reduce concentration risk without weakening the manufacturing system responsible for its product quality, scale and launch schedules.

Trade Tensions Turn Efficiency Into Risk

The same China supply chain that provides Apple with extraordinary efficiency also exposes the company to political decisions outside its control.

Tariffs can raise the cost of devices exported from Chinese factories. Export restrictions can limit access to materials or production equipment, while sanctions may affect suppliers and technology partners.

Chinese government policies can influence the use of foreign devices inside state agencies and companies. U.S. rules can restrict the technologies available to Chinese firms that also participate in Apple’s supplier network.

Apple cannot solve these problems through product design alone. It must maintain relationships with two governments whose technology policies increasingly emphasize security, domestic production and strategic independence.

Moving more assembly to India gives Apple additional flexibility, particularly for iPhones destined for the United States. China nevertheless remains important as a production center and consumer market.

An aggressive withdrawal could damage supplier relationships and local sales. Moving too slowly could leave Apple vulnerable to another trade disruption.

The company is trying to preserve Chinese capabilities while creating enough capacity elsewhere to keep a political dispute from becoming a worldwide product shortage.

Retail Stores Give Apple a Direct Relationship

Apple’s physical stores remain an important advantage in China because they give the company direct contact with customers.

The stores allow buyers to compare models, receive technical support, attend educational sessions and enter the ecosystem without depending entirely on a carrier or reseller.

That experience is particularly valuable for premium products. A customer considering a Mac, Apple Vision Pro or high-end iPhone may need more explanation than someone replacing an inexpensive handset.

Retail locations also communicate long-term commitment. A prominent store represents more than a sales channel; it signals that Apple intends to remain part of the local technology market.

Online commerce is equally important. Chinese consumers are accustomed to large shopping festivals, aggressive promotions and rapid delivery through domestic platforms.

Apple must balance its controlled global pricing with a market where discounts can change quarterly rankings. Too little flexibility makes the iPhone appear expensive, while frequent reductions can train customers to delay purchases and weaken its premium image.

The strongest 2026 performance came partly from avoiding price increases while component costs were forcing rivals to reconsider their pricing. That advantage may disappear when competitors adjust their supply chains or launch another cycle of promotions.

Chinese Consumers Set a Higher Product Standard

China is often discussed as a sales problem for Apple, but it also functions as a demanding test of the iPhone.

Domestic flagship phones compete through larger batteries, rapid charging, advanced camera hardware, folding displays and deep integration with local digital services.

Features considered experimental elsewhere can become established expectations more quickly in China. Apple’s slower adoption cycle may look disciplined in one market and conservative in another.

The company must decide which expectations represent durable improvements and which are temporary specification contests. Copying every local feature would weaken Apple’s focused product strategy, but ignoring major changes creates openings for rivals.

This pressure can benefit Apple globally. Competition in China forces the company to defend the value of its standard iPhone, improve battery efficiency, strengthen cameras and make software features more useful outside English-speaking markets.

The opportunity is therefore not limited to selling more devices. China can reveal where Apple’s global assumptions no longer match the most competitive part of the smartphone industry.

The post Apple in China Is Its Greatest Opportunity and Hardest Test appeared first on AppleMagazine.

App Store regulatory changes are beginning to affect Apple Services growth as developers gain more ways to avoid Apple’s payment system or pay lower commissions in major markets.

Apple finance chief Kevan Parekh told investors that changes to the App Store business model in some countries had affected its performance during the June quarter. Softer spending on mobile games created additional pressure.

The acknowledgement is significant because regulatory risk has appeared in Apple filings for years without producing a clearly identified effect on Services performance. Apple is now confirming that rule changes have advanced far enough to influence reported results.

The impact does not mean the App Store has stopped growing. Apple described the store as reaching another June-quarter revenue record, while Services expanded by approximately 12% from the previous year.

The emerging issue is the rate of growth. A purchase can still occur inside an iPhone app while generating less revenue for Apple when the customer pays through a developer’s website or uses terms carrying a reduced fee.

App Store Regulatory Changes Affect Several Markets

Apple did not identify one country or policy as solely responsible for the effect.

The company is adapting to a collection of court orders, competition laws and regulatory agreements that differ substantially among the United States, European Union, China, Brazil, Japan, South Korea and other markets.

Some rules concentrate on payment choice. They allow developers to place links or buttons inside apps leading customers to external checkout pages.

Other changes permit alternative app marketplaces or direct distribution outside the App Store. Several regulators are also examining whether Apple can charge developers for transactions completed through another payment provider.

The financial result depends on the model adopted in each country. Apple may receive no commission, a reduced commission or another fee connected with platform technology and distribution.

This creates a more fragmented App Store business. A subscription sold through the same application can produce different revenue for Apple according to the customer’s country, payment route and the developer terms governing that version of the app.

The United States Changed External Payment Links

The most direct change in the United States came from the long-running legal dispute between Apple and Epic Games.

A federal court previously ordered Apple to stop preventing developers from directing customers toward outside purchasing options. Apple responded by allowing certain external links while seeking commissions of between 12% and 27% on purchases completed through them.

The company also introduced design restrictions, an approval process and a warning screen displayed when customers left the App Store environment.

In April 2025, the district court found Apple in civil contempt for failing to comply fully with the anti-steering injunction. The ruling prohibited the company from collecting a commission on purchases made through external links and removed several restrictions governing their appearance.

Apple updated its App Review Guidelines in May 2025. Apps distributed through the United States storefront can include buttons, external links and other calls to action leading customers toward another payment method.

The rules no longer require a special external-link entitlement for the U.S. storefront.

That change gives developers a straightforward financial reason to move some transactions to the web. A company can process a payment through another provider instead of giving Apple a percentage of the digital sale.

The customer can return to the iPhone app and use the purchased subscription or content. The app remains distributed through Apple, but the associated transaction no longer produces the same App Store commission.

Enough developers adopting that route can slow Apple Services growth even if total spending on iPhone applications continues increasing.

The European Union Introduced Alternative Distribution

The European Union’s Digital Markets Act requires Apple to permit alternative app marketplaces, outside payment systems and other changes intended to reduce its control over iOS distribution.

Developers can remain under Apple’s conventional App Store terms or adopt business terms designed for the European market.

The alternative structure separates several services that were previously combined inside one commission. Developers can choose different levels of App Store support, use Apple’s payment system, provide another payment option or distribute software through a competing marketplace.

Apple introduced reduced commissions and technology-related fees to preserve compensation for the tools, security systems, distribution infrastructure and platform access it provides.

Those terms have changed several times following regulatory objections. Beginning in 2026, Apple started moving from its earlier Core Technology Fee toward a Core Technology Commission applied to eligible digital transactions under particular conditions.

The structure means outside payments do not always eliminate Apple fees in Europe. They can still reduce the amount Apple collects or shift revenue among different fee categories.

Regulators continue examining whether the terms provide meaningful choice or discourage developers from leaving the standard model.

Apple argues that alternative stores and payment systems create additional privacy, security and fraud risks. The European Commission has focused on whether Apple’s warnings, technical requirements and fees make those options unnecessarily difficult to use.

European developers must calculate more than one commission. They need to consider payment-processing costs, marketplace charges, customer acquisition, reporting obligations and the Apple terms attached to each distribution method.

The result may be lower App Store revenue without an equally large shift toward independent marketplaces. External website payments can change Apple’s economics more quickly because they do not require customers to install another store.

China Reduced Some App Store Commissions

App Store regulatory changes are not limited to alternative stores and external payments.

Apple lowered several commission rates in the China mainland storefront beginning March 15, 2026.

Qualifying transactions under the App Store Small Business Program and Mini Apps Partner Program now carry a 12% commission. The same rate applies to eligible auto-renewing subscriptions after the subscriber’s first year.

These transactions previously qualified for a higher 15% rate.

A three-percentage-point reduction may appear small beside demands for completely independent payments. At the scale of China’s app economy, it can remove a meaningful amount of revenue while improving the share retained by developers.

The Mini Apps Partner Program is particularly important in China because large platforms can contain many smaller services inside one host application.

Reducing the commission can encourage those ecosystems to continue using Apple In-App Purchase. It also demonstrates how Apple may respond to pressure by offering more favorable terms before regulators require a more disruptive change.

Lower commissions can support transaction growth over time, but the immediate calculation is straightforward: Apple receives less from each qualifying purchase.

Brazil Opens iOS to Outside Stores and Payments

Apple introduced alternative app distribution and payment options in Brazil through an agreement with the country’s competition regulator, CADE.

Beginning with iOS 26.5, developers can distribute apps through alternative marketplaces, operate those marketplaces and process digital payments outside Apple In-App Purchase.

Apps can also present links leading users to an external website where the transaction is completed.

Apple continues applying notarization and other technical requirements to software distributed outside the App Store.

The company maintains that these protections reduce risks but cannot provide the complete safeguards associated with App Review.

Brazil is a major smartphone and digital-services market. Its effect on Apple Services will depend on whether large developers adopt the new options and whether customers are willing to leave the familiar App Store purchasing flow.

An external option existing in software does not guarantee that people will use it. The developer must usually offer a meaningful advantage, such as a lower price, a different subscription package or payment methods better suited to local customers.

Adoption can increase gradually as existing apps release updates. The financial impact may therefore become more visible over several quarters rather than appearing immediately after the regulatory agreement takes effect.

Why Outside Payments Reduce Apple Services Revenue

Apple receives a commission when an eligible digital purchase uses its in-app payment system.

The fee compensates Apple for distribution, payment processing, fraud management, developer tools, customer support and access to the iOS platform, according to the company.

The standard percentage varies. Small developers and long-running subscriptions can qualify for reduced rates, while other eligible digital transactions may carry higher commissions.

When payment moves to a developer’s website, an independent processor handles the financial transaction. The developer pays that provider, manages more of the customer relationship and retains the amount that would otherwise become an App Store fee.

Apple may still provide the operating system, APIs, development tools and App Store distribution without receiving the conventional payment commission.

This separation explains why App Store activity and App Store revenue can move differently. People may download more applications and spend more on digital services while Apple captures a smaller percentage of the commerce.

The same customer could maintain several subscriptions used exclusively on an iPhone without any of their monthly payments passing through Apple.

Apple can collect other revenue from that user through hardware, advertising, iCloud or its own subscriptions. The external transaction nevertheless removes one part of the Services model.

Most App Store Commerce Never Paid Apple a Commission

The size of the App Store economy should not be confused with Apple’s commissionable revenue.

Apple says the global App Store ecosystem facilitated more than $1.4 trillion in developer billings and sales during 2025. More than 90% of that commerce did not produce a commission for the company.

The largest categories involve physical goods and services such as retail purchases, travel, grocery delivery, restaurant orders and transportation.

Apple does not collect a percentage when someone uses an Amazon app to order furniture, books a hotel or pays for a meal delivered through an iPhone.

App Store commissions generally concentrate on digital goods, application features, virtual items and subscriptions sold through Apple In-App Purchase.

Regulatory changes target this smaller but financially important part of the ecosystem.

Digital transactions require no physical inventory or delivery network, allowing payment commissions to carry attractive margins. Losing part of that revenue can therefore affect profitability more than the dollar amount alone suggests.

Apple does not disclose App Store revenue or profit separately. The category remains combined with cloud services, advertising, media subscriptions, AppleCare, payments and other operations inside Services.

Mobile Gaming Weakness Adds Another Pressure

Regulation was not the only factor Apple identified.

Parekh said softer mobile gaming activity also affected the App Store. Games represent an important source of digital transactions because players purchase virtual currency, characters, cosmetic items, subscriptions and access to additional content.

A decline in game spending directly affects the commission Apple receives through In-App Purchase.

Gaming is also one category where developers have pushed aggressively for alternative stores and payments. Epic Games began its legal confrontation with Apple after introducing another payment method inside Fortnite and attempting to bypass App Store commissions.

The simultaneous effects are difficult to separate. A game can generate lower revenue because players are spending less, because payments moved outside Apple’s system or because both changes occurred together.

Apple does not provide enough category detail to calculate the contribution from each factor.

The distinction matters for the outlook. Gaming demand can recover with successful releases and stronger consumer spending. A permanent regulatory change does not reverse when one popular game reaches the top of the charts.

Developers Gain Revenue but Assume More Work

Outside payments can improve the amount a developer retains from each purchase.

A company moving from a conventional App Store commission to a lower-cost web payment processor may use the difference to reduce prices, fund development or improve profitability.

The developer also assumes responsibilities previously handled through Apple.

Independent billing requires payment processing, tax management, fraud protection, refunds, account recovery and customer support. Subscription status must synchronize correctly between the website and the iPhone app.

Customers changing devices or reinstalling an app expect their purchases to remain available. The developer needs its own account system capable of verifying ownership without relying entirely on Apple’s purchase history.

Small developers may decide that Apple In-App Purchase remains worth its fee because it removes operational complexity and gives customers a familiar checkout experience.

Large subscription businesses have stronger incentives to build their own systems. They already maintain accounts and payments across websites, televisions, Android devices and other platforms.

The regulatory effect will therefore vary by developer size and business model. One company may remove Apple billing completely, while another continues using it because external infrastructure would cost more than the commission saved.

Customers May Receive Lower Prices

External payments create the possibility of lower subscription prices because developers no longer need to incorporate the complete App Store fee into the amount charged.

Some services already cost more when purchased through an iPhone app than through their websites. The higher price allows the developer to preserve similar revenue after Apple receives its share.

A visible external link makes comparing those prices easier. Customers can leave the app, complete the transaction on the web and return with an active account.

Savings are not guaranteed. A developer can retain the entire difference rather than passing it to subscribers.

Independent billing can also make subscription management less consistent.

Purchases completed through Apple appear in one location:

Settings > Apple Account > Subscriptions

A subscription purchased directly must be canceled through the developer’s website or account system. Customers using many external services may need to remember several billing portals and renewal policies.

Refunds and purchase disputes also move away from Apple. The developer or its payment processor becomes responsible for resolving the transaction.

Choice can reduce prices while increasing complexity. The practical outcome depends on whether developers make external checkout clearly cheaper and easy to manage.

Apple Is Expanding Other App Store Tools

Apple is responding to the changing environment by adding business models and marketing systems that can keep developers using its commerce platform.

Monthly subscriptions with a 12-month commitment allow participating apps to offer lower recurring payments while securing a complete year of revenue.

The Advanced Commerce API supports more complex content catalogs, optional add-ons and subscription structures that were previously difficult to manage through standard In-App Purchase products.

Apple has also expanded tools for custom product pages, promotional offers, application analytics and international distribution.

These additions increase the value attached to App Store billing. A developer may tolerate a commission when Apple provides conversion tools, subscription management and access to promotional placement that would be expensive to reproduce independently.

The company can also adjust rates for particular categories. The Small Business Program, Mini Apps Partner Program and reduced commission for longer-running subscriptions already demonstrate differentiated pricing.

A more competitive payment market may push Apple toward additional service tiers rather than one universal commission.

The UK Could Create the Next Material Change

The United Kingdom’s Competition and Markets Authority is consulting on rules that would allow developers to direct customers outside Apple and Google’s payment systems.

The regulator expects any fee charged for steering to be fair, reasonable and lower than current app-store commissions. It wants the resulting savings passed to customers or reinvested in developer businesses.

The UK proposal is not yet a final requirement. Its eventual structure could determine whether developers receive the broad freedom available in the United States or a fee-based model closer to some European arrangements.

Regulators are also considering app-review fairness, interoperability and access to mobile-platform capabilities.

The outcome will matter beyond British customers. Each major jurisdiction creates another model that regulators elsewhere can examine when designing their own rules.

Apple must decide whether to continue maintaining different commercial systems by country or move toward broader global terms that reduce operational complexity.

Developers face the same choice. Supporting a separate payment route, marketplace package and reporting process for every region can become expensive enough to cancel some of the benefits regulation intended to create.

The next evidence will come from behavior rather than another policy announcement: how many major apps add external payment links, whether they offer lower prices and how quickly customers move away from Apple’s checkout.

The post App Store Regulatory Changes Begin Slowing Services Growth appeared first on AppleMagazine.

A new study published in Communications Earth & Environment reports that central Tibet’s rugged mountain architecture was not built in a single burst. Instead, it was shaped by long-lived crustal shortening that persisted after a major ocean closed during the Cretaceous period—when the Bangong–Nujiang Ocean shut down and the surrounding plates collided.

The research team, led by Zhang, Liu, Lin, and colleagues, examines how tectonic forces transferred through the region during and after ocean closure. Their central finding is that shortening did not simply end when the ocean vanished. Rather, the continental collision continued to drive deformation well beyond the immediate collision event, helping sustain mountain growth over extended geological time.

To reach this conclusion, the authors combine regional tectonic constraints with structural observations that reflect how stress and strain were distributed through the Tibetan crust. They interpret the evolving patterns of deformation as evidence for sustained compression, including the way different crustal levels responded to continued convergence.

The study frames the Bangong–Nujiang Ocean closure as a pivotal tectonic switch: once the ocean disappeared, the mechanical coupling between continental blocks increased. That change allowed compression to remain effective, promoting ongoing uplift and crustal thickening in central Tibet.

Importantly, the paper links this sustained shortening to the broader development of Tibetan topography. Rather than treating uplift as a short-lived response to a single collisional moment, the results support a scenario in which post-closure tectonics kept feeding the mountain belt for millions of years.

By addressing the timing and persistence of shortening, the work helps refine how geologists explain the thick crust beneath Tibet and the coexistence of active deformation with long-term structural inheritance. The authors suggest that the region’s growth reflects both the closure of an ocean basin and the prolonged geodynamic consequences of that closure.

The findings also carry implications for how future modeling efforts should represent continental collisions. They highlight that plate-tectonic reorganizations can create enduring mechanical conditions, sustaining deformation even after the most dramatic phase of convergence has passed.

With the DOI link and citation tied to the 2026 publication, the study—understood through its title and approach—offers a clear, data-driven narrative: central Tibet’s rise reflects sustained shortening following Cretaceous ocean closure, shaping a mountain system that kept growing long after the ocean was gone.

Subject of Research: Tectonics and mountain growth in central Tibet following the Cretaceous closure of the Bangong–Nujiang Ocean

Article Title: Sustained shortening following Cretaceous Bangong–Nujiang Ocean closure shaped central Tibetan mountain growth.

Article References: Zhang, B., Liu, S., Lin, C. et al. Communications Earth & Environment (2026). https://doi.org/10.1038/s43247-026-03830-3

Image Credits: AI Generated

A groundbreaking study unveils how the ARP2/3 complex orchestrates the dynamic behavior of neurites, providing fresh insights into neuronal growth and polarity. Researchers utilized advanced optogenetic tools to manipulate RAC1, an upstream regulator of ARP2/3, revealing spatially distinct roles of actin assembly in neuronal morphology.

By employing photoactivatable RAC1 (PA-RAC1), the team demonstrated that ARP2/3-mediated actin assembly at neurite tips promotes growth cone activation and neurite extension. Local activation of PA-RAC1 triggered robust growth cone dynamics, driving neurite elongation. Conversely, activation of a dominant-negative RAC1 mutant led to collapse of the growth cone and neurite retraction, underscoring ARP2/3’s role in sustaining neurite advancement.

Intriguingly, PA-RAC1 activation at the soma induced lamellipodia formation reminiscent of nascent actin waves, which were associated with neurite retraction events. This phenomenon mirrored intrinsic cellular behaviors where somatic actin waves correspond with retracting neurites. The study elegantly showed that the emergence of these waves reduced somatic actin patch intensity, indicating a tightly regulated cytoskeletal oscillator mechanism.

The authors further explored the effects of ARP2/3 inhibition using CK-666 perfusion at distinct cellular locales. When applied over the soma and proximal neurites, CK-666 induced neurite retraction, whereas neurites outside this region continued growing unabated. Notably, actin waves were initiated in neurites outside the inhibited zone, propagating retrogradely toward the soma but dissipating upon entering CK-666-exposed areas. This highlights a spatial dependence of ARP2/3 activity for wave initiation and propagation.

Remarkably, simultaneous activation of PA-RAC1 at multiple growth cones revealed competitive dynamics in actin assembly, with enhanced growth cone activity limited to one or two sites. This suggests an intrinsic cellular mechanism balancing cytoskeletal resources and neurite growth across the complex neuronal arborization.

Together, these findings articulate a dual role for ARP2/3: driving actin wave initiation at the soma that triggers neurite retraction, and supporting growth cone expansion at neurite tips to promote extension. This oscillatory interplay mediated by ARP2/3 and RAC1 underscores the cytoskeleton’s fundamental role in establishing neuronal polarity.

This study not only provides a mechanistic framework for how neurons spatially regulate growth and retraction but also suggests that intrinsic cytoskeletal oscillators underpin the dynamic remodeling necessary for proper neuronal circuit formation. These insights pave the way for future investigations into cytoskeletal dysregulation in neurodevelopmental disorders and neuronal regeneration strategies.

The precise spatial control of actin dynamics mediated by ARP2/3 complex activity advances our understanding of neuronal development, highlighting how local cytoskeletal modulators can dictate overall neuronal architecture through oscillatory growth behaviors.

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Subject of Research: Neuronal cytoskeletal dynamics and polarity establishment

Article Title: An intrinsic cytoskeletal oscillator establishes neuronal polarity

Article References:
Lin, Tc., Coles, C.H., Alfadil, E. et al. An intrinsic cytoskeletal oscillator establishes neuronal polarity. Nature (2026). https://doi.org/10.1038/s41586-026-10755-6

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41586-026-10755-6

In a groundbreaking discovery that could revolutionize the therapeutic approach to oral squamous cell carcinoma (OSCC), researchers have unveiled the intricate role of the circadian gene PER2 in modulating intracellular cholesterol synthesis. This novel mechanistic insight opens new avenues for chronotherapy, particularly enhancing the efficacy of simvastatin, a widely used cholesterol-lowering agent, in combating this aggressive form of cancer.

Oral squamous cell carcinoma remains a significant global health challenge, with limited advancements in effective treatment modalities over the past decades. The cancer’s high propensity for invasiveness and metastasis necessitates innovative strategies that go beyond conventional chemotherapy and radiotherapy. At the cellular level, the adaptation of metabolic pathways, including cholesterol biosynthesis, is increasingly recognized as a hallmark of cancer progression. Cholesterol not only supports membrane biogenesis in rapidly proliferating cancer cells but also acts as a precursor for vital signaling molecules that drive oncogenic pathways.

Central to this study is the circadian clock gene PER2 (Period Circadian Regulator 2), traditionally known for its role in maintaining the body’s biological rhythms. Beyond its canonical function in regulating sleep-wake cycles, PER2 has emerged as a multifaceted regulator of cellular metabolism and tumor suppression. The research team employed a combination of molecular biology techniques, transcriptomic analyses, and in vivo models to delineate how PER2 interfaces with the cholesterol synthesis machinery within cancer cells.

Their findings reveal that PER2 exerts a repressive effect on the mevalonate pathway, the critical metabolic cascade responsible for the generation of cholesterol. Specifically, PER2 downregulates key enzymatic nodes, including HMG-CoA reductase, thereby attenuating the flux of cholesterol precursors. This metabolic reprogramming is pivotal in depriving OSCC cells of essential lipid components required for their malignant behavior, effectively halting tumor growth and invasiveness.

Intriguingly, the study highlights that the endogenous oscillation of PER2 expression within cancer cells aligns with fluctuations in cholesterol synthesis activity. This temporal regulation suggests that the timing of therapeutic intervention could dramatically influence treatment outcomes. Leveraging this insight, the researchers investigated the concept of chronotherapy, administering simvastatin at specific circadian phases to synchronize drug action with the natural troughs in cholesterol biosynthesis dictated by PER2 rhythms.

Experimental paradigms demonstrated a pronounced enhancement in simvastatin’s anticancer efficacy when dosing corresponded with PER2-mediated suppression of cholesterol synthesis. This time-dependent treatment paradigm not only improved tumor regression in preclinical models but also minimized cytotoxic effects on healthy tissues, implying a superior therapeutic index for such chronomodulated regimens.

The implications of these findings extend beyond OSCC treatment, offering a proof-of-concept for integrating circadian biology with metabolic targeting in precision oncology. By harnessing the endogenous biological clock, it may be possible to optimize pharmacodynamics, reduce adverse effects, and overcome resistance mechanisms that have long hindered statin-based anticancer strategies.

Moreover, this research addresses a critical gap in understanding the interplay between clock genes and lipid metabolism in cancer biology. It proposes a cohesive framework where PER2 functions as a metabolic gatekeeper, orchestrating intracellular cholesterol synthesis in a temporally controlled manner that impacts tumorigenicity. The use of simvastatin, a clinically approved HMG-CoA reductase inhibitor, underscores the translational potential of this approach, facilitating rapid clinical adoption and testing in OSCC patients.

The study meticulously dissected the molecular circuitry underlying PER2’s regulatory role, identifying downstream effectors and transcriptional networks that culminate in cholesterol synthesis repression. Through chromatin immunoprecipitation and gene reporter assays, the team uncovered binding sites within promoters of key enzymes, confirming direct transcriptional control. This level of mechanistic detail enriches the conceptual landscape of circadian-metabolic interaction in cancer and provides novel biomarker candidates for therapeutic monitoring.

In vivo experiments employing xenograft models recapitulated the in vitro observations, demonstrating that modulation of PER2 expression modulates tumor growth trajectories. Mice receiving time-tailored simvastatin interventions showed significant tumor volume reduction and improved survival compared to conventional dosing schedules. These data illuminate the potential clinical benefits of integrating circadian timing in cancer drug administration protocols.

Beyond its immediate practical applications, this research invigorates the scientific dialogue around the circadian clock’s influence on cancer metabolism. It challenges researchers to rethink therapeutic strategies by factoring in the temporal dimension of tumor biology. Such chronotherapeutic interventions could ultimately lead to personalized, time-optimized cancer treatments that align with each patient’s molecular circadian profile.

Furthermore, the study invites exploration into combinatorial regimens where PER2 modulation and cholesterol pathway inhibitors act synergistically with immunotherapies or targeted agents. Understanding how circadian regulation interfaces with immune checkpoints and tumor microenvironment dynamics could unlock unprecedented multimodal approaches to OSCC management.

Given the clinical availability and well-characterized safety profile of statins, these findings carry significant translational momentum. Clinical trials designed to evaluate the chronotherapeutic efficacy of simvastatin in OSCC patients are a logical next step, potentially paving the way for novel treatment paradigms that leverage both metabolism and circadian biology.

In summary, this transformative work elucidates a critical metabolic checkpoint governed by the circadian gene PER2, fundamentally altering intracellular cholesterol synthesis and presenting a time-dependent vulnerability in oral squamous cell carcinoma. By aligning pharmacologic intervention with these biological rhythms, the efficacy of simvastatin is markedly enhanced, heralding a new era of chronobiology-informed oncology therapeutics.

As the scientific community continues to unravel the complexities of cancer metabolism and circadian regulation, studies like these underscore the paradigm-shifting potential of integrating diverse biological disciplines. The intersection of chronobiology and cancer metabolism exemplified by PER2’s role may well become a blueprint for future innovations aimed at conquering formidable malignancies such as OSCC.

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Subject of Research: The role of the circadian gene PER2 in regulating intracellular cholesterol synthesis and enhancing the chronotherapeutic efficacy of simvastatin in oral squamous cell carcinoma.

Article Title: PER2 reprograms intracellular cholesterol synthesis to inhibit oral squamous cell carcinoma and the chronotherapeutic efficacy of simvastatin.

Article References:
Yin, S., Yang, F., Zhang, Z. et al. PER2 reprograms intracellular cholesterol synthesis to inhibit oral squamous cell carcinoma and the chronotherapeutic efficacy of simvastatin. Cell Death Discov. (2026). https://doi.org/10.1038/s41420-026-03209-5

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41420-026-03209-5

In a groundbreaking study poised to redefine early interventions in autism spectrum disorder (ASD), researchers have unveiled new insights into the intricate interplay between brain development and behavioral patterns that forecast spoken vocabulary acquisition in young children with autism. Published in Translational Psychiatry in 2026, this pioneering work merges multimodal neuroimaging with detailed behavioral assessments, offering a nuanced understanding of how early childhood brain and behavioral markers converge to shape language outcomes in this population.

The study tackles one of the most perplexing facets of autism—the vast variability in language development, particularly spoken vocabulary. Language acquisition in children with ASD is notoriously heterogeneous, with some children progressing to age-appropriate speech while others remain nonverbal or develop only limited vocabularies. The research team, led by Surgent, Naigles, Dakopolos, and colleagues, conceptualized a multimodal predictive framework that integrates neurological data and observable behaviors, an approach that promises to yield more precise individual prognoses.

Central to their methodology was the utilization of advanced neuroimaging techniques during early childhood to evaluate brain structure and connectivity. These imaging modalities included diffusion tensor imaging (DTI), functional magnetic resonance imaging (fMRI), and volumetric analyses that together painted a comprehensive picture of the neural substrates critical for language processing. Specifically, measures of white matter integrity in tracts such as the arcuate fasciculus, known for its role in language networks, offered predictive value regarding the trajectory of vocabulary growth.

Parallel to imaging, the researchers conducted rigorous behavioral observations, focusing on early communicative attempts, joint attention, and social engagement metrics. These behavioral indices serve as functional readouts of the developing brain’s linguistic capacity and its interaction with the child’s environment. The amalgamation of brain imaging metrics with behavioral data created a rich dataset enabling machine learning algorithms to identify patterns that standard clinical assessments might overlook.

One of the most compelling revelations of this research came from the combined predictive power of brain-behavior models as opposed to isolated measures. While previous studies have often considered either neurobiological markers or behavioral indicators in silos, this study demonstrated that an integrative model significantly enhances prediction accuracy for spoken vocabulary outcomes months to years in advance. This finding signals a paradigm shift in early diagnosis and intervention planning, suggesting that multimodal data collection should become standard practice.

The implications for clinical application are profound. Accurate early prediction of language development trajectories using this multimodal approach could allow clinicians and caregivers to tailor intervention strategies with unprecedented specificity. For instance, children flagged as likely to experience more significant language delays might receive intensified speech and language therapies, while those predicted to gain vocabularies at typical rates could benefit from less intensive, yet still supportive, programs. This targeting aligns resources more efficiently and helps optimize developmental outcomes.

Moreover, the study illuminated potential neurobiological mechanisms underlying the language profiles seen in autism. White matter pathways supporting auditory-motor integration, semantic processing, and syntactic construction were shown to exhibit differing maturation trajectories in children with more favorable vs. impaired vocabulary development. These findings hint at critical windows during which neural plasticity interventions might be most effective, informing future trials of neurotherapeutics or brain stimulation techniques.

Beyond therapeutic considerations, the research also advances fundamental understanding of autism itself by underscoring how language acquisition is modeled through complex brain networks and shaped by early communicative behaviors. The integration of structural and functional brain data with real-world social and language behaviors accentuates the bidirectional and dynamic nature of neurodevelopment in ASD, challenging static conceptualizations that have predominated in the field.

The authors further caution that while predictive models are promising, ethical considerations around prognostic information for families must be carefully managed. Delivering predictions about language outcomes is profoundly impactful, necessitating sensitive communication, counseling support, and ongoing monitoring to adjust interventions as children grow and contexts change. The study emphasizes that predictive algorithms are tools to augment, not replace, clinical judgment.

Complementing their scientific contributions, the study’s open-access dissemination via a reputed neuroscience journal ensures rapid accessibility to clinicians, researchers, and policy makers worldwide. The transparency of methods and availability of anonymized data for secondary analyses encourage replication and cross-validation, fostering accelerated progress in autism research ecosystems.

Looking forward, the research team envisions expanding their multimodal approach to encompass other domains of development affected in autism, such as social cognition, executive function, and adaptive behavior. Integrating additional biomarker modalities like genomics and metabolomics could further refine individualized predictions and catalyze precision medicine initiatives in neurodevelopmental disorders.

In sum, this seminal study marks a critical advance in unraveling the complex nexus between brain maturation, behavioral development, and language acquisition in autism. Its innovative multimodal framework sets a new standard for early prediction and personalized intervention, offering hope for improving long-term communicative outcomes for children with ASD worldwide. As science continues to decode the developing autistic brain, such integrative approaches will be instrumental in bridging biology and behavior to transform lives.

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Subject of Research: Early childhood brain and behavior predictors of spoken vocabulary development in autism

Article Title: Multimodal predictors of spoken vocabulary development in autism: the role of early childhood brain and behavior

Article References:
Surgent, O., Naigles, L., Dakopolos, A. et al. Multimodal predictors of spoken vocabulary development in autism: the role of early childhood brain and behavior. Transl Psychiatry (2026). https://doi.org/10.1038/s41398-026-04168-2

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41398-026-04168-2

Researchers at Texas A&M University report the successful regrowth of skeletal and connective tissues, in what they call a “critical step” toward one day enabling major tissue regeneration in humans.

Throughout time, the regenerative capabilities that, in some cases, can even restore entire lost limbs, have been viewed as an almost miraculous ability that only certain animals, such as salamanders, some reptiles, and other creatures, possess.

However, regenerative science is now unlocking the secrets of this capability, meaning that one day, even humans might be able to tap into one of nature’s most mysterious superpowers.

Awakening Humanity’s Dormant Regenerative Superpower

Current state-of-the-art research at the Texas A&M College of Veterinary Medicine and Biomedical Sciences is revealing a remarkable possibility: that regenerative abilities may not be absent in mammals after all—they may simply be dormant.

This remarkable possibility was detailed in a recent study published in Nature Communications, which details research led by Dr. Ken Muneoka with the school’s Department of Veterinary Physiology & Pharmacology (VTPP), who says he has devoted most of his career to unraveling this possibility.

Now, Muneoka and his team report a two-step treatment they developed, which successfully triggered the regeneration of bone, joint structures, ligaments, and other tissues following amputation—a significant advancement toward unlocking more powerful regenerative capabilities in humans.

“Why some animals can regenerate and others, particularly humans, can’t is a big question that has been asked since Aristotle,” Muneoka says.

Fibrolasts to the Fore

In their research, the team worked with cells that drive the healing processes and scar formation after wounds occur, which are known as fibroblasts.

In species like salamanders, similar cells go to work when injury or limb loss occurs, which begin to form into structures biologists call blastemas. These formative materials are the primary drivers behind the regrowth of tissues in such creatures.

However, unlike salamanders, mammalian cells need a bit more encouragement before they will begin to follow such regenerative pathways.

To help with this process, Muneoka and his team developed a new sequential treatment based on a pair of primary growth factors. Applying fibroblast growth factor 2 (FGF2) in an area where a wound had already healed stimulated the formation of blastema-like formations in mammal cells. Then, after several days, a bone morphogenetic protein 2 (BMP2) was applied, which similarly prompted bone cells to begin rebuilding their lost tissues.

“You first shift the cells away from scarring, and then you provide the signals that tell them what to build,” Muneoka said of this two-step process.

While the regenerated structures were not perfect replicas of the original anatomy, what Muneoka and his team achieved is still nothing short of remarkable: the team says they were able to successfully restore all major components that are typically lost when amputation occurs, including bone, tendons, ligaments, and joints.

“The Capacity is Not Absent”

Also of key significance is the fact that the team’s findings suggest that such hidden powers of regeneration might be accessible without the need for introducing external stem cells.

“You don’t have to actually get stem cells and put them back in,” Muneoka said. “They’re already there—you just need to learn how to get them to behave the way you want.”

Dr. Larry Suva, the recent study’s co-author, said the results challenge long-held assumptions about the limits of mammalian healing.

“The cells that we thought to be unprogrammable, in fact are,” Suva said. “The capacity is not absent—it’s just obscured.”

The Future of Regenerative Science

The team’s work is breaking new ground in the promising field of regenerative science, although what they have achieved so far is still in the earliest stages of what they believe may ultimately be possible.

Soon, such approaches may yield applications that could help significantly reduce scarring and may greatly help with tissue repair. Also, since BMP2 has already undergone the approval process for medical uses, and FGF2 is undergoing evaluation in clinical trials, Muneoka, Suva, and the Texas A&M team believe the path toward future medical applications may be more accessible than entirely new therapies.

“Regenerative failure in mammals can be rescued,” Muneoka said.

“Now we have a model to begin figuring out how,” he added.

The team’s recent study, “Digit regeneration in mice is stimulated by sequential treatment with FGF2 and BMP2,” was published in Nature Communications.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

Aging affects every part of the human body, but some changes happen so gradually that people barely notice them. One of the most common age-related changes is the loss of muscle mass and strength. Many older adults find that they become weaker, tire more easily, and have more difficulty performing everyday tasks. Although these changes […]

The post Weakening Muscles May Encourage Cancer Growth appeared first on Knowridge Science Report.

In an era where neonatal care constantly strives for innovation, a groundbreaking advancement has taken center stage with the introduction of a novel preterm standardized parenteral nutrition (PN) system. This new system, clinically evaluated in a recent study published in Pediatric Research, ushers in a paradigm shift in the targeted delivery of macronutrients to preterm infants—a population that demands precise nutritional management for optimal growth and development. The intricate balance of nutrients essential for these vulnerable neonates has historically posed significant challenges, but this standardized approach promises to bridge crucial gaps in clinical practice.

Parenteral nutrition, an intravenous delivery of nutrients, is a life-sustaining intervention for preterm infants who are unable to meet their nutritional needs through enteral feeding. Traditional PN protocols often suffer from variability in nutrient composition and administration, which can lead to suboptimal growth trajectories and metabolic imbalances. The new standardized system, as clinically evaluated in this study, aims to provide a meticulously engineered nutrient profile tailored specifically to the metabolic and developmental requirements of preterm neonates. This innovation underscores a movement towards precision nutrition grounded in robust clinical evidence.

At the core of this novel PN system lies its standardization—a concept that harmonizes nutrient delivery to ensure consistency. The researchers hypothesized that standardized nutrient solutions, formulated on current knowledge of preterm infant metabolic demands, can improve outcomes by reducing the risk of both undernutrition and overnutrition. The system’s capacity to deliver targeted macronutrients—proteins, fats, and carbohydrates—reflects a comprehensive understanding of neonatal physiology and the critical role that early nutrient supply plays in brain development, organ maturation, and long-term health.

The clinical evaluation involved a rigorously designed trial, assessing physiological parameters and growth indices in preterm infants receiving the new PN regimen. Key endpoints included tolerance, biochemical markers of nutrient metabolism, and growth velocity compared to historical controls receiving conventional PN strategies. The outcomes demonstrated a notable enhancement in targeted nutrient delivery accuracy, with significant improvements in protein and energy intake metrics. This elevation in nutrient provision was correlated with improved early growth patterns, a crucial determinant of neurodevelopmental outcomes in preterm infants.

One of the paramount technical achievements of the study was the formulation of nutrient solutions that maintain biochemical stability during storage and infusion, an often-overlooked determinant of clinical efficacy. Utilizing advanced compounding techniques and novel stabilizing agents, the standardized PN solutions resisted degradation and precipitation, ensuring homogeneity throughout administration. This technical refinement minimizes the risks of infusion-related complications, such as electrolyte imbalances and catheter occlusions, highlighting the clinical practicality of the innovation.

Furthermore, the system incorporates a modular design enabling flexibility to adjust macronutrient profiles on a per-patient basis without compromising the standard formulation’s integrity. This capacity for customization is particularly vital given the heterogeneity within the preterm population, where gestational age, birth weight, and comorbidities profoundly influence nutritional requirements. The ability to balance standardization with individualized care positions this PN system as a versatile tool adaptable to various neonatal intensive care unit (NICU) settings worldwide.

The study’s comprehensive nutrient profiling was informed by evolving insights into neonatal metabolism, where carbohydrates fuel energy demands, proteins support growth and organ function, and lipids supply essential fatty acids critical for brain development. By synchronizing these macronutrients to mirror physiological needs, the standardized system optimizes metabolic efficiency and reduces metabolic stressors, potentially mitigating complications such as parenteral nutrition-associated liver disease (PNALD) and metabolic acidosis.

Critically, the study underscored a reduction in clinical variability among care providers, an important factor in neonatal outcomes. Standardized protocols mitigate human errors and inconsistencies, ensuring that every preterm infant receives a comparable, evidence-based nutrient regimen. This standardization fosters enhanced interdisciplinary communication and simplifies the education and training of NICU staff, promoting safer and more reliable nutrient delivery.

Beyond immediate clinical benefits, the introduction of this standardized PN system invites broader implications for research and practice. It sets a precedent for the development of standardized therapeutic interventions that incorporate comprehensive biochemical understanding with clinical pragmatism. As the neonatal care community contemplates the balance between innovation and accessibility, this model of preterm nutrition may inspire similar approaches in other critical care domains.

Importantly, neonatal nutrition impacts long-term health trajectories extending into adulthood, influencing risks of chronic diseases, cognitive function, and overall quality of life. By refining nutrient delivery during this pivotal developmental window, the standardized system holds promise to favorably alter life courses for the most vulnerable newborns. The commitment to targeted, scientifically rigorous nutrition reflects a forward-thinking investment in lifelong health.

The researchers also acknowledged limitations and avenues for future exploration, including the need for larger multicenter trials to validate generalizability across diverse populations and healthcare systems. Exploring the interactions between early nutrition and genomic or microbiome factors remains a compelling frontier. Such integrative approaches may unlock even greater precision and personalization in neonatal nutrition strategies.

In conclusion, the clinical evaluation of this novel preterm standardized parenteral nutrition system marks a seminal advancement in neonatal intensive care. By combining rigorous biochemical formulation with an adaptable, standardized framework, the system elevates the precision and reliability of targeted macronutrient delivery. This innovation embodies a critical step towards optimizing early-life nutrition, with profound implications for survival, growth, and neurodevelopment.

As neonatal care continues to evolve, embracing standardized yet flexible approaches will be vital in meeting the complex needs of preterm infants. The research by Brennan et al. exemplifies how translational science can transform clinical paradigms, delivering tangible benefits at the bedside. Moving forward, widespread adoption and ongoing refinement of such systems have the potential to revolutionize neonatal nutritional care on a global scale, fundamentally improving outcomes and empowering caregivers.

With its promising results, this study stands as a beacon of hope within neonatal medicine, underscoring the power of targeted nutrition and precision medicine in the earliest stages of human life. The future of preterm care is being shaped here—where science, technology, and compassionate care converge—to offer a healthier start for the world’s tiniest patients.

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Subject of Research: Preterm standardized parenteral nutrition system for targeted macronutrient delivery in neonatal care.

Article Title: Clinical evaluation of a novel preterm standardised parenteral nutrition system for targeted macronutrient delivery.

Article References:
Brennan, AM., Fenton, S.E., Panaite, L.S. et al. Clinical evaluation of a novel preterm standardised parenteral nutrition system for targeted macronutrient delivery. Pediatr Res (2026). https://doi.org/10.1038/s41390-026-05167-1

Image Credits: AI Generated

DOI: 10.1038/s41390-026-05167-1

As the global population ages, understanding the biological mechanisms linking muscle deterioration and cancer progression has become increasingly imperative. A groundbreaking study led by scientists at Duke-NUS Medical School in Singapore has illuminated a novel cellular communication pathway whereby ageing skeletal muscle influences tumor growth. This pioneering research reveals that sarcopenia, the age-related decline of muscle mass and strength, not only compromises mobility but may actively promote cancer development through alterations in extracellular vesicle secretion.

Extracellular vesicles, tiny membranous particles secreted by virtually every cell type, have emerged as critical conveyors of intercellular communication. These vesicles ferry a diverse cargo of proteins, lipids, and nucleic acids, including microRNAs, modulating the behavior of recipient cells in physiological and pathological contexts. The Duke-NUS team discovered that ageing muscles secrete significantly fewer extracellular vesicles, and those released are compositionally altered, particularly exhibiting a reduction in the microRNA known as miR-7a-5p. This small regulatory RNA is instrumental in suppressing tumorigenic pathways, suggesting that its decline may contribute to an environment conducive to cancer growth.

The study meticulously delineates how the biogenesis and release of muscle-derived extracellular vesicles are governed by the NOTCH-SDC2 signaling axis — a pathway previously recognized for its role in cell differentiation and tissue maintenance. With advancing age, the activity of this pathway diminishes, leading to disrupted formation of vesicles and impaired delivery of tumor-suppressive signals. Intriguingly, the researchers found that physical exercise could reverse this decline, reactivating the NOTCH-SDC2 pathway, restoring vesicle production, and reinstating the protective role of miR-7a-5p-containing extracellular vesicles.

These findings represent a significant advance in our understanding of sarcopenia’s impact beyond musculoskeletal decline, positioning weakened muscle as a contributor to oncogenesis. By establishing a direct molecular link between muscle ageing and tumor progression, the study opens promising avenues for novel therapeutic strategies aimed at harnessing or mimicking muscle-derived extracellular vesicles to inhibit cancer development.

Clinically, the observed correlation between low muscle mass and advanced cancer stages has often been attributed to poor patient fitness; however, this research highlights an active biological mechanism through which muscle health influences tumor biology. Co-investigator Dr. Kenon Chua emphasizes the clinical ramifications, underscoring that muscle-secreted molecules extend their benefits beyond physical function to systemic health. This insight reinforces the critical importance of maintaining muscle volume and quality through regular resistance and aerobic exercise, especially in older adults.

The implications extend to cancer prevention and management, suggesting that interventions aimed at preserving or enhancing muscle function could mitigate oncogenic risks. Furthermore, the specific decline of miR-7a-5p in extracellular vesicles presents an attractive biomarker candidate for assessing cancer susceptibility in individuals suffering from sarcopenia. Detecting such biomarkers could enable earlier identification of at-risk populations, facilitating timely intervention.

Future research directions include validating these mechanisms in human subjects and exploring the translational potential of muscle-derived extracellular vesicles. The ability to pharmacologically stimulate the NOTCH-SDC2 pathway or supplement miR-7a-5p may lead to innovative therapeutics that counteract age-associated cancer risks. Moreover, the study’s insights advocate for integrating physical activity programs into public health policies targeting healthy ageing.

Assistant Professor Tang Hong-Wen, the study’s senior author, remarks on the broader significance of the findings: the muscle-to-tumor communication pathway exemplifies how systemic tissue health influences malignancy, bridging disciplines across oncology, gerontology, and cellular biology. It also emphasizes the hidden complexity of extracellular vesicle-mediated signaling in maintaining tissue homeostasis and restraining disease progression.

This research was conducted under the HEAL (Healthy ageing, Executive function and Ambulatory Longevity) programme, a collaboration that underscores Singapore’s commitment to pioneering science aimed at improving the quality of life in elderly populations. Supported by a consortium of grants from Singapore’s Ministry of Education, the National Medical Research Council, and the National Research Foundation, the study exemplifies a successful synergy between fundamental biology and clinical relevance.

By integrating rigorous experimental methodologies, including high-resolution electron microscopy and molecular profiling, with translational objectives, the Duke-NUS team has unveiled new biological insights with far-reaching implications. The study underscores the crucial role of microRNAs in extracellular vesicle function and highlights the adaptability of their biogenesis pathways to lifestyle factors such as exercise.

In summary, this research reframes our understanding of muscle ageing not simply as a matter of diminished strength and mobility but as a dynamic contributor to systemic disease processes including cancer. The potential for exercise and related interventions to restore vesicle-mediated tumor suppression offers hope for innovative, holistic strategies against cancer that encompass musculoskeletal health as a critical component.

Subject of Research: Cells

Article Title: Sarcopenia promotes tumorigenesis by disrupting NOTCH-SDC2-regulated biogenesis of muscle-derived extracellular vesicles

News Publication Date: 17 June 2026

Web References: https://www.nature.com/articles/s41467-026-72410-y

References: Chen L-K, Woo J, Assantachai P, et al. Asian Working Group for Sarcopenia: 2019 Consensus Update on Sarcopenia Diagnosis and Treatment, American Medical Directors Association. 2019;21(3):300-307.e2.

Image Credits: Goh Kah Yong, Duke-NUS Medical School

Keywords: Sarcopenia, Extracellular Vesicles, MicroRNA, miR-7a-5p, NOTCH-SDC2 pathway, Muscle Ageing, Tumorigenesis, Cancer Biology, Exercise, Biomarkers, Cellular Communication, Healthy Ageing

In a groundbreaking advance at the intersection of bioengineering and microbiology, researchers at Harvard’s John A. Paulson School of Engineering and Applied Sciences have unveiled a pioneering device known as a pico-calorimeter. This remarkable instrument is capable of directly detecting heat signals emanating from minute populations of living cells, a feat that until now has remained technologically elusive due to the vanishingly small scale of these thermal signatures. By enabling real-time metabolic tracking at unprecedented sensitivity, the pico-calorimeter promises to revolutionize our understanding and monitoring of cellular activity, bacterial growth, and antibiotic response.

At the core of this innovation is the principle that living cells, as they metabolize nutrients, grow, divide, and react to external stimuli such as drugs, intrinsically emit heat. This metabolic heat, although incredibly subtle, offers a direct, unmediated insight into the physiological state of cells. Unlike conventional methods that infer cellular metabolism indirectly through oxygen consumption or chemical byproducts, the pico-calorimeter provides a direct calorimetric measurement, offering a more immediate and accurate assay of cellular energetics.

The technical architecture of the device is a marvel of microengineering. It consists of three ultrafine glass capillaries aligned on a delicately micromachined membrane with near-atomic precision. One of these capillaries harbors the biological sample suspended in a liquid growth medium, while the remaining two serve as thermodynamic reference points. As the bacteria or other cells within the sample metabolize and proliferate, they release minute quantities of heat. This thermal flux generates infinitesimal temperature gradients relative to the reference capillaries, which are then transduced into electrical signals by a nearby thermopile—an exquisitely sensitive heat-to-electricity converter capable of resolving fluctuations on the order of picowatts.

A critical enhancement in this iteration of the pico-calorimeter lies in its housing within a vacuum chamber. This vacuum environment thermally isolates the sensor assembly from ambient thermal noise, dramatically amplifying sensitivity by nearly an order of magnitude compared to antecedent designs. The prior versions employed liquid droplets on suspended membranes, which, while innovative, presented operational challenges and limited sensitivity. The current vacuum-sealed, microfluidic integration advances robustness, usability, and measurement fidelity, marking a milestone in the delicate art of thermal detection at the cellular scale.

Demonstrating the device’s prowess, the research team employed the pico-calorimeter to monitor Escherichia coli growth dynamics, beginning with an initial seed population as modest as thirty to forty individual bacterial cells. This capability to detect and analyze such small biological communities unveils immense potential for applications ranging from fundamental microbiology to clinical diagnostics. Notably, the device was employed to examine bacterial metabolic responses upon introduction of antibiotics with varying mechanisms of action—chloramphenicol, rifampicin, and ampicillin—capturing differential heat signatures indicative of altered cellular viability and activity.

These direct calorimetric measurements have revealed metabolic perturbations well in advance of what traditional culture-based microbiological assays could discern. This capability is particularly transformative in clinical scenarios such as sepsis, where detecting and characterizing bacterial populations at extremely low concentrations in blood is vital but presently time-consuming. The pico-calorimeter’s sensitivity could drastically truncate diagnostic timelines from days to hours, allowing more timely and targeted antimicrobial interventions.

Beyond measuring growth and antibiotic susceptibility, the pico-calorimeter enables continuous, real-time monitoring of fundamental cellular parameters including viability, proliferation rate, and stress responses. This temporal resolution offers researchers the invaluable ability to dynamically track cellular states and transitions, capturing metabolic shifts as cells respond to environmental perturbations or pharmacological treatments. Such insights may open new frontiers in cell biology, pharmacodynamics, and personalized medicine.

This breakthrough device represents the culmination of roughly two decades of meticulous research in the Vlassak laboratory, with contributions building from initial exploration of nano-calorimetry techniques aimed at materials science phenomena such as phase transitions in shape memory alloys and metallic glasses. The interdisciplinary bridge extended to biological systems has ushered in ultrasensitive calorimetry methods capable of assessing metabolic heat production in large cells and complex embryonic development processes, laying foundational expertise for this current bio-calorimetric leap.

Technologically, the fabrication of the pico-calorimeter draws upon state-of-the-art micro- and nanofabrication facilities, including the Harvard Center for Nanoscale Systems. The integration of microfluidics and micromachined sensing elements within thermally isolated environments exemplifies the cutting-edge convergence of materials science, electrical engineering, and biological instrumentation. The multidisciplinary synergy underscores the technological sophistication essential for detecting thermal signals billions of times smaller than everyday heat fluxes.

Commercially, the Harvard Technology Development office has filed multiple patents covering the pico-calorimeter and its applications in antimicrobial susceptibility testing. Juanjuan Zheng, a pivotal figure in this research and founder of an innovative startup, is leveraging the technology to deliver practical, label-free, real-time metabolic readouts. These tools hold promise for broad adoption in life sciences research, pharmaceutical development, and clinical diagnostics, harnessing the power of heat measurement to glean functional insights from minute biological samples.

As the research community embraces this transformative platform, interest has surged from a diverse array of scientific domains. The ability to capture direct metabolic information from tiny, dynamic living systems resolves a long-standing challenge in single-cell and small-population analysis. This heralds a new era where functional metabolic data provides early and actionable information on biological states, ranging from cellular growth and stress response to drug efficacy and resistance patterns.

In essence, the Harvard pico-calorimeter transcends conventional bioanalytical tools by transforming infinitesimal heat emissions into a vivid metabolic narrative. This technological breakthrough not only augments our scientific toolkit but also possesses the potential to accelerate biomedical discovery, enhance therapeutic precision, and ultimately improve patient outcomes by enabling rapid, noninvasive interrogation of cellular function. The implications for healthcare, research, and biotechnology are profound, heralding an exciting frontier where the subtle warmth of life becomes an unequivocal signal of cellular health and response.

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Subject of Research: Cells
Article Title: A pico-calorimeter for cellular metabolism and antimicrobial susceptibility testing
References: Proceedings of the National Academy of Sciences
Image Credits: Vlassak Group / Harvard SEAS
Keywords: Calorimetry, Chemical analysis, Life sciences, Biophysics, Single cell profiling, Single molecule analysis, Materials science, Physics, Applied sciences and engineering, Applied physics, Engineering, Electrical engineering, Chemical engineering, Mechanical engineering, Health and medicine, Biomedical engineering

For a diminutive amphibian measuring no larger than a single fingernail, the allocation of energy can mark the fine line between survival and demise. Recent groundbreaking research from the University of Florida delves into the intricate decisions juvenile frogs make regarding energy distribution, especially when confronted with lethal pathogens. By leveraging a blend of empirical data and computational modeling, the study uncovers nuanced strategies these tiny creatures adopt, balancing growth and immune defense — insights that not only illuminate amphibian biology but also shed light on broader ecological and evolutionary dynamics.

Central to this study is the common coqui frog (Eleutherodactylus coqui), an emblematic species native to Puerto Rico known for its direct development, bypassing the traditional tadpole stage. This biological peculiarity means these frogs hatch as fully formed miniature adults, profoundly influencing how energy constraints impact their early life stages. Given their extraordinarily small size, approximately equivalent to a human pinky nail, tracking individual frogs in natural environments is virtually impossible. Consequently, the research team integrated robust field and experimental observations into sophisticated computer models, simulating how these frogs allocate scarce resources across growth and immunity throughout a typical year.

The research focuses poignantly on the interplay between the coqui frogs and a devastating fungal pathogen, Batrachochytrium dendrobatidis (Bd), commonly known as chytrid fungus. This pathogen has wreaked havoc on amphibian populations globally, making it a critical subject for understanding disease ecology. Leveraging data encompassing seasonal fluctuations in food availability and infection risk, the models capture the dynamic energy budgeting decisions these amphibians undertake. Intriguingly, findings reveal a compelling survival strategy: juvenile frogs prioritize rapid growth during early life phases, deferring costly immune investments until infection intensity escalates to dangerous levels.

This strategic delay in immune response is hypothesized to optimize survival probabilities. Small, slow-growing individuals face heightened predation risks, making early growth paramount. By investing in immunity only when faced with a significant pathogenic threat, frogs effectively balance the trade-offs between immediate survival pressures and long-term health. The models demonstrate that this energy allocation strategy maximizes fitness, highlighting the sophistication of amphibian physiological responses to environmental and pathogenic stressors.

Temporal variation emerges as a decisive factor modulating these energy allocation decisions. Seasonal oscillations in temperature and precipitation orchestrate changes in food resources and pathogen prevalence. Frogs hatching during favorable summer conditions, when prey is abundant, can allocate energy more flexibly across growth and immune defense, enhancing their chances for survival and successful maturation. Conversely, cohorts born during cooler and drier periods encounter constrained energy budgets, compelling a more frugal distribution that compromises both growth rates and immune competence, with dire consequences for survival.

This research also illuminates the broader implications of climate change for amphibian populations. Extending or intensifying cool, dry periods could exacerbate energetic limitations faced by juvenile frogs, impeding rapid growth and compromising immune defenses. Such shifts threaten to undermine population resilience against pathogens like chytrid fungus, potentially precipitating more severe declines. Understanding these vulnerabilities is crucial for conservation efforts aiming to buffer amphibian species against accelerating environmental perturbations.

Methodologically, the study exemplifies the power of integrating mechanistic disease models with empirical data sets. By simulating individual-level energy trade-offs in relation to pathogen exposure within fluctuating environments, the researchers transcend traditional population-level disease modeling. This approach unveils heterogeneity in individual responses, a key dimension often masked in aggregate analyses, enabling a more precise understanding of disease dynamics and host resilience.

The study’s lead author, Zuania Colón-Piñeiro Ph.D., emphasizes the importance of dissecting individual heterogeneity in disease ecology: “Not all individuals respond identically to pathogens, and understanding this heterogeneity is vital for predicting population outcomes.” Her collaboration with senior author Ana V. Longo Ph.D. underscores the synergy between empirical natural history and theoretical modeling, with Longo highlighting the unique biology of coqui frogs that facilitates this research and provides broader insights into amphibian developmental strategies.

The implications of these findings extend beyond the realm of wild amphibians. The computational framework developed by the team offers a valuable tool for conservationists managing captive breeding programs. By modeling energy allocation strategies under varying environmental conditions and pathogen pressures, conservationists can optimize rearing protocols to boost survival rates post-release, enhancing the efficacy of reintroduction programs. This translational potential exemplifies the study’s impact, providing a bridge between fundamental ecological theory and practical wildlife management.

Importantly, the research team advocates for the continued integration of fieldwork and modeling. Models, while powerful, rely on accurate and extensive biological data to yield meaningful predictions. Field studies that track environmental variables, pathogen prevalence, and individual growth trajectories remain indispensable. This dual approach ensures that theoretical insights remain grounded in biological reality, ultimately guiding more effective interventions to safeguard vulnerable species.

The study, entitled “Playing it safe at early life stages: Balancing energy allocations to maximize fitness under seasonal pathogen dynamics,” stands as a testament to interdisciplinary collaboration, involving expertise across multiple departments at the University of Florida, the University of Puerto Rico, and partner institutions. By illuminating how minute amphibians navigate the energetic tightrope of survival amidst disease threats and fluctuating environments, it adds a significant chapter to our understanding of life history evolution and disease ecology.

As amphibian declines continue to raise alarms on global biodiversity fronts, insights from such detailed mechanistic studies are invaluable. They remind us that survival strategies are seldom straightforward and that even the tiniest creatures deploy sophisticated physiological tactics honed by evolution. Understanding these strategies underpins efforts to stem biodiversity loss, highlighting the intricate tapestry connecting organismal biology, environmental dynamics, and disease.

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Subject of Research: Animals

Article Title: Playing it safe at early life stages: Balancing energy allocations to maximize fitness under seasonal pathogen dynamics

News Publication Date: 15-Jun-2026

Web References: http://dx.doi.org/10.1111/1365-2656.70282

Image Credits: Alberto López

Keywords: Frogs, Amphibians, Developmental biology, Evolutionary developmental biology, Immune system, Adaptive immune system, Immune regulation

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