Researchers have tracked the electrical activity of individual brain cells during conversation in real time. Plus, the history of GPS and a cross-species transplant that could reveal clues about the origin of animals.
Plague swept through groups of hunter-gatherers in southeastern Siberia 5,500 years ago, leaving dozens dead in its wake—with DNA from Yersinia pestis bacteria still trapped inside their teeth.
University of Oxford ancient DNA researcher Ruairidh Macleod and his colleagues recently sequenced the telltale bacterial DNA in teeth from plague victims at four ancient cemeteries in the area around Russia’s Lake Baikal. The tragedy that befell these communities is now the earliest known plague outbreak, courtesy of the oldest strain of Y. pestis ever sequenced.
Unearthing a new backstory for the plague
Until recently, scientists who study the evolution of diseases have held two fairly solid ideas about the origins of plague, the disease caused by Yersinia pestis bacteria. It's a scourge so awful that it has gone down in history as not just a plague but the plague. The first idea is that the earliest strains didn't have the right genetic traits to be really lethal. And the second is that the plague first began menacing humans when the first farmers settled in densely packed towns alongside rats and domestic animals.
Plague swept through groups of hunter-gatherers in southeastern Siberia 5,500 years ago, leaving dozens dead in its wake—with DNA from Yersinia pestis bacteria still trapped inside their teeth.
University of Oxford ancient DNA researcher Ruairidh Macleod and his colleagues recently sequenced the telltale bacterial DNA in teeth from plague victims at four ancient cemeteries in the area around Russia’s Lake Baikal. The tragedy that befell these communities is now the earliest known plague outbreak, courtesy of the oldest strain of Y. pestis ever sequenced.
Unearthing a new backstory for the plague
Until recently, scientists who study the evolution of diseases have held two fairly solid ideas about the origins of plague, the disease caused by Yersinia pestis bacteria. It's a scourge so awful that it has gone down in history as not just a plague but the plague. The first idea is that the earliest strains didn't have the right genetic traits to be really lethal. And the second is that the plague first began menacing humans when the first farmers settled in densely packed towns alongside rats and domestic animals.
Heat flux across the core–mantle boundary is laterally variable, and heat may flow into the core beneath hot piles of dense material such as large low-shear-wave-velocity provinces, according to mantle thermochemical convection models.
A prototype differential atom interferometer operates at the standard quantum limit with no excess noise beyond atom shot noise, achieving performance in line with the specifications for future long-baseline atom interferometers.
The Pakistan Genome Resource compiles biobank data from 173,303 individuals with high familial relatedness, broadening the catalogue of human genetic variation and establishing a population-specific genomic reference for Pakistan.
A technique combining atomically resolved scanning tunnelling microscopy with neural-quantum-state quantum Monte Carlo simulation of disordered 2D electron Wigner solids establishes a powerful framework to enable the clear identification of two distinct defect-induced disorder regimes.
A tiny electronic sensor that can be swallowed like a pill may soon provide one of the most accurate ways to measure body temperature. Engineers at the Massachusetts Institute of Technology (MIT) have developed a miniature device that continuously monitors temperature from inside the digestive tract, potentially helping doctors detect infections earlier and better manage […]
Tariq Mahmood was alarmed when he found 19 sacks tucked away in a railway tunnel in the Chakwal district of northern Pakistan. Their contents were extremely disturbing: 45 rotting pangolin carcasses, all devoid of their distinct, orange-and-light-brown scales. That was in 2012. “It was very difficult to see these innocent, dead bodies,” said Mahmood, a wildlife biologist at Pir Mehr Ali Shah Arid Agriculture University in Pakistan, who began studying pangolins in 2009. Finding so many slain Indian pangolins (Manis crassicaudata) alerted Mahmood to a dark truth. Poachers were paying local citizens to capture them, so the overlapping scales that cover their bodies — the pangolin’s first line of defense — could be sold into the illegal wildlife trade. “It was terrible to know that.” At the time, global conservationists were realizing that demand for pangolin was driving trade, mostly to China. “We first saw the emergence of this intercontinental trafficking around 2010, and it’s continued to take place since then,” said Dan Challender, a pangolin expert at the University of Oxford who has studied international wildlife trade for 15 years. This shy, toothless, nocturnal animal has become the world’s most-trafficked mammal. When Asia’s four species were nearly poached to extinction, traders turned to the four African species and their numbers soon plummeted. All pangolins are on the IUCN Red list: Four of them, including the Indian pangolin, are endangered, and three hang on the brink, critically endangered. Pangolin scales command substantial prices on the black market. The demand is…This article was originally published on Mongabay
Researchers have uncovered more than 400 fossilized whale bones in an ocean-floor chasm. Plus, the working lives of scientists, in pictures, and how AI could slow the pace of research publication for the better.
A team of researchers from the Massachusetts Institute of Technology (MIT) and other institutions has developed a new way to improve the performance of powerful electronic devices by using an ultrathin layer of diamond. The breakthrough could help future technologies such as 6G wireless networks, satellite communications, radar systems, and even data centers operate faster […]
Evidence from fossilized poo reveals the diverse diet of ancient ground squirrels. Plus, the science behind the peptide craze and our innate tendency to wander anticlockwise.
Submit your abstract for “Advancing Weather and Environmental Science Through NASA and NOAA Commercial Satellite Data Programs,” a joint session hosted by NASA’s Commercial Satellite Data Acquisition (CSDA) program, in partnership with the NOAA National Environmental Satellite, Data, and Information Service (NESDIS) Commercial Data Program (CDP).
The session is part of the 23rd Symposium on Operational Environmental Satellite Systems, which will take place at the 2027 American Meteorological Society (AMS) Annual Meeting January 10-14 in Denver, Colorado. It will examine the growing capabilities of commercial Earth observation providers that are creating new opportunities to advance weather research, operational forecasting, and environmental science applications.
NASA’s CSDA program and NESDIS’s CDP collaborate to expand federal access to commercial satellite data and accelerate its use in both research and operational applications.
The CSDA program supports the scientific community by evaluating and acquiring diverse commercial datasets, including optical, Synthetic Aperture Radar, Global Navigation Satellite System Radio Occultation and Reflectometry, methane, precipitation, and Digital Elevation/Terrain Models for modeling, hazard monitoring, climate studies, and applied research.
Similarly, the CDP operationalizes commercial space-based environmental data, with demonstrated impacts from assimilated observations in weather forecasting and space weather applications. It also conducts pilot projects and transitions the piloted data to operations.
Together, the CSDA and CDP strengthen the nation’s weather enterprise by enabling innovative research, closing observational gaps, and integrating commercial data into real-world forecasting and decision support applications.
To submit an abstract or for additional information about the abstract submission process, visit the symposium’s website.
Accelerated Arctic glacier disintegration and a more dynamic sea ice cover are increasing iceberg-delivered dropstones in the deep ocean, reshaping seafloor habitats and extending cryospheric impacts far beyond glaciers.