Experts say increased use of crops for fuel is ‘dangerous game’ that could send food price inflation soaring

Demand for biofuels is likely to leap by nearly a third this year, which could send food price inflation soaring further and push the world closer to a global food crisis.

More countries are opting to increase biofuel use as the price of oil has jumped to nearly $100 a barrel after the US-Israeli attacks on Iran and the closure of the strait of Hormuz.

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© Photograph: Brazil Photos/LightRocket/Getty Images

© Photograph: Brazil Photos/LightRocket/Getty Images

© Photograph: Brazil Photos/LightRocket/Getty Images

As offshore wind farms expand rapidly in the global renewable energy transition, scientists are studying how these large marine infrastructure projects affect ecosystems beneath the waves. Research from Wageningen University & Research in the Netherlands suggests that offshore wind may bring both risks and benefits for sharks and rays, known collectively as Elasmobranchii, which are highly sensitive to electromagnetic fields (EMFs). A six-year project called “Elasmopower” examined how EMFs from subsea power cables in offshore wind farms affect bottom-dwelling sharks and rays. These species depend on natural electric and magnetic fields for key behaviors such as navigation, prey detection, habitat use and long-distance movement, particularly in low-visibility environments. The studies conducted as part of the Elasmopower project have been published in four papers, with three additional papers currently undergoing peer review. Sharks and rays have specialized electroreceptors called ampullae of Lorenzini. The jelly-filled sensory canals around the head and snout can detect even extremely weak EMFs from prey and predators, water movement, and the Earth’s geomagnetic field, Erwin Winter, a scientist at Wageningen, told Mongabay. This system is central to hunting and orientation, making Elasmobranchii especially relevant for studying EMF exposure from offshore energy infrastructure, Winter added. Erwin Winter, a researcher with the Elasmopower project, presented findings on offshore wind, electromagnetic fields and bottom-dwelling sharks and rays at the Sharks International 2026 conference in Colombo, Sri Lanka, in May. Image by Malaka Rodrigo for Mongabay. During a presentation on a summary of the Elasmopower research at the Sharks International 2026…This article was originally published on Mongabay

Thousands of electric vehicles in Waymo’s autonomous robotaxi fleet may eventually give up their used batteries for a very different purpose—contributing up to hundreds of megawatt-hours of stationary energy storage to local power grids.

That prospect comes from a “strategic supply agreement” announced by Waymo and B2U Storage Solutions on June 4. B2U has been repurposing thousands of used batteries from various electric vehicles by installing them in large stationary energy storage projects. Such energy storage facilities can capture excess renewable energy during low demand periods and release such energy when local power grids are experiencing peak demand periods.

“Our business is getting the full residual value out of electric vehicle batteries after they're no longer suitable for automotive use,” Freeman Hall, CEO of B2U Storage Solution, told Ars. “Waymo puts a lot of miles on EVs and their model is expanding rapidly, and so we're just very pleased and honored to be able to work with them.”

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How to change the energy market from within. Plus: Is Iran Trump’s Vietnam?

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Last week, as the war in Iran continued to choke global oil supplies, the UK government announced a 13% increase in the cap on energy prices. But it was another related story on the other side of the world that caught my eye.

In Australia, the energy minister announced a fall of up to 10% in the benchmark electricity price in parts of the country, driven by record levels of renewables and batteries in the power grid.

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© Illustration: Guardian Design

© Illustration: Guardian Design

© Illustration: Guardian Design

The pilot turns unused railway space into a small but closely watched solar test.

Nour Haydar speaks with Christopher Knaus about the BHP files – the cache of internal documents leaked to the Guardian and the ABC’s Four Corners – which show that the world’s biggest miner has war-gamed ways to massively delay decarbonisation

Additional audio in this episode was sourced by Financial Times Live

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© Composite: Victoria Hart/Guardian

© Composite: Victoria Hart/Guardian

© Composite: Victoria Hart/Guardian

Exclusive: Mining giant says technology is not yet advanced enough to run a fully electrified fleet but experts say it is hooked on federal fuel tax credits

• Revealed: the internal BHP memo that slammed the brakes on world’s biggest miner’s climate push

• Read more from the BHP files investigation here

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BHP has continued to spend hundreds of millions of dollars buying diesel trucks in the Pilbara despite internal documents suggesting it would increase emissions and be “misaligned” with its decarbonisation goals.

The mining giant is Australia’s biggest consumer of diesel and trucks are its biggest single source of diesel emissions. Replacing the fleet with battery-electric trucks is considered a critical step in the multinational’s efforts to decarbonise.

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© Composite: Guardian

© Composite: Guardian

© Composite: Guardian

Cllr Lucy Shaw says councils could take up many policies to help, including more support for rooftop solar installations

Your editorial is right that the government could be doing more to help with the cost of living (The Guardian view on Britain’s coming energy shock: mini-measures won’t suffice, 22 May). That extends to local government, too. Renewable energy projects, from the industrial scale right down to rooftops, can be scuppered locally even if there is national support. The wealthiest borough in the entire country, Kensington and Chelsea, has the nation’s lowest rooftop solar installation rate, at just 0.6% of households according to the MCS installer database. This is despite touting groundbreaking policies to make it easier to build solar in conservation areas.

There are so many local policies that would help. Coordinating solar installations by street could lead to material cost savings, as would simpler permitting rules, and installations on council-owned rooftops. When 80% of cars in the borough are parked on the street, cost-effective public charging is essential to ensure that drivers can make the switch, like offering discounted charging when grid power is cheapest. Partnering with housing associations, charities, and energy suppliers to help people access energy efficiency services and government capital grants, or negotiate payment plans for their bills could go a long way to making people feel more secure.

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© Photograph: Justin Paget/Getty Images

© Photograph: Justin Paget/Getty Images

© Photograph: Justin Paget/Getty Images

While Westminster’s attention is focused on Andy Burnham and Makerfield, another pivotal byelection is taking place in Scotland’s north-east

The coming byelection in Makerfield, from where Andy Burnham aspires to make rapid progress towards Downing Street, is perhaps the most consequential in British political history. But the decision by the Scottish National party’s former Westminster leader, Stephen Flynn, to relocate to Holyrood means that another pivotal contest is taking place more than 350 miles to the north. If Makerfield is a test case for Mr Burnham and Labour’s ability to see off Reform UK, Mr Flynn’s old constituency of Aberdeen South is on the frontline of the increasingly fraught politics of North Sea oil.

Labour, despite finishing second in the 2024 general election thanks largely to anti-Tory tactical voting, will not be expecting much this time round. The ramifications of Donald Trump’s reckless war in Iran have exposed Britain’s ongoing vulnerability to fossil-fuel-related energy shocks, highlighting the practical benefits of moving to a green economy. But the knock-on effects of the closure of the strait of Hormuz have also been a gift for the Scottish Conservatives and Reform, who are framing the byelection as a local referendum on reviving oil and gas production beyond Westminster-imposed limits.

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© Photograph: Iain Masterton/Alamy

© Photograph: Iain Masterton/Alamy

© Photograph: Iain Masterton/Alamy

Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies

The timing was rich with symbolism. As intense heatwaves pummelled Europe and Asia, and oil markets around the world leapt and sputtered, the two big chimneys of one of Australia’s largest power stations were being demolished. Meanwhile, the Australian energy minister was holding a media conference to hail a fall of up to 10% in the benchmark electricity price in parts of the country.

Quietly, and with surprisingly little fanfare from the rest of the world, Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies. The country was already one of the global leaders in domestic solar power, with panels on one in three homes. It also remains, however, a major contributor to the climate crisis through its vast fossil fuel exports. But it is batteries that are giving Australia a new burst of speed.

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© Photograph: Hollie Adams/Reuters

© Photograph: Hollie Adams/Reuters

© Photograph: Hollie Adams/Reuters

More than 400,000 batteries have been installed under the cheaper home batteries scheme. Here’s how to get the best bang for your buck

• Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint

• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

If Australians love solar, they are head over heels for home batteries. More than 400,000 batteries have been installed under the government’s subsidy scheme.

Here’s what you need to consider if you’re looking at getting one installed.

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© Composite: Getty Images

© Composite: Getty Images

© Composite: Getty Images

A PAC representing wind and solar energy interests spent $1.1 million to boost the Republican primary opponent of Chip Roy, an opponent of renewables. Now they are trying to save a Republican ally in Iowa.

A PAC representing wind and solar energy interests spent $1.1 million to boost the Republican primary opponent of Chip Roy, an opponent of renewables. Now they are trying to save a Republican ally in Iowa.

© Michael A. McCoy for The New York Times

Clean power remains essential. But until it arrives, Britain must stop LNG made scarce by the Iran war setting gas and electricity prices

The US-Israel war on Iran will drive household energy costs in Britain to their highest level in two years over the summer. This has given fresh impetus to calls for the energy secretary, Ed Miliband, to change course. The cabinet minister is vulnerable because he promised cheaper bills if Britain embraced his clean, green power plan.

Critics, including Labour’s former prime minister Sir Tony Blair, are circling. Yet Mr Miliband ought to ignore the naysayers. Until global carbon emissions, including Britain’s, are reduced to net zero, the planet will continue to fry and temperature records will continue to be broken.

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

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© Photograph: Loop Images Ltd/Alamy

© Photograph: Loop Images Ltd/Alamy

© Photograph: Loop Images Ltd/Alamy

Energy specialists say abandoning net zero and increasing oil and gas drilling would cause more instability for Britons

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Abandoning net zero and drilling for more oil and gas in the North Sea would be a massive setback for the UK and would not help the economy, leading experts have said in response to claims by the former prime minister Tony Blair.

“This is a bizarre intervention to make during the worst May heatwave on record and when the Iran crisis is providing yet more evidence of the enormous costs of oil and gas,” said Ed Matthew, the UK programme director at the E3G thinktank. “Clean energy is cheaper energy – it protects our bills from prices skyrocketing, its running costs are virtually zero, and it doesn’t cause climate change which threatens economic collapse ... The government should ignore Blair’s ideological nonsense and focus on what works.”

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© Photograph: Christopher Furlong/Getty Images

© Photograph: Christopher Furlong/Getty Images

© Photograph: Christopher Furlong/Getty Images

With early tests suggesting the presence of crude oil, the Caribbean island has begun to debate whether it could justify becoming a producer

Jamaica is closer than ever to drilling for oil. Tests on samples from the seabed off the Caribbean island’s south coast earlier this year identified hydrocarbons, which suggest the presence of crude oil below ground.

Jamaica imports all its fuel, which costs about $1.5-2bn (£1.1bn-1.5bn) annually, depending on global oil prices. It is a persistent drag on an economy that generated $4.3bn from tourism, its biggest earner, in 2024.

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© Illustration: Eleanor Shakespeare

© Illustration: Eleanor Shakespeare

© Illustration: Eleanor Shakespeare

More Americans are using small solar panels in their back yards or balconies as a clean way to cut their electric bills

If you feel like your electricity bill just keeps climbing, you aren’t imagining it. Since 2020, US residential energy prices have surged by about 30%, making power the largest household energy expense behind gasoline, according to the US Energy Information Administration.

But for residents like Alex Curtis, the days of feeling powerless against rising costs are coming to an end. Curtis is waging a war on his electric bill, and his new weapon of choice is a lightweight, thin-film solar panel.

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© Photograph: Climate Central

© Photograph: Climate Central

© Photograph: Climate Central

Regulator could do us all a favour with clear multi-year forecasts and breakdowns of electricity pricing

It is easy to predict where the energy regulator will set the next quarterly price cap on Wednesday. It’s just a matter of tracking wholesale prices in Ofgem’s relevant backward-looking “observation period”. Energy consultant Cornwall Insight thinks the typical household bill be £1,850, an increase of £209 from the previous quarter. It will be surprising if it is out by more than a few quid.

One can also make a fair guess at the regulator’s messaging. It will talk about the unavoidable impact from the surge in energy prices that followed the closure of the strait of Hormuz. It may also say the increase would be even greater than 13% without the additional wind and solar generation on the system these days. Fair enough. Gas sets the wholesale price of electricity only 60% of the time now, down from 90% not long ago.

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© Photograph: Murdo MacLeod/The Guardian

© Photograph: Murdo MacLeod/The Guardian

© Photograph: Murdo MacLeod/The Guardian

Exclusive: Cache of internal documents leaked to the Guardian and the ABC’s Four Corners show multinational has war-gamed ways to massively delay decarbonisation

• Revealed: the internal BHP memo that slammed the brakes on world’s biggest miner’s climate push

• Read more from the BHP files investigation here

• Get our breaking news email, free app or daily news podcast

The world’s biggest miner has halted or delayed projects to cut vast amounts of emissions and has quietly war-gamed options to push major climate investments in its Western Australian iron ore operations into the next two decades, internal documents show.

An exclusive investigation based on documents leaked to the Guardian and the ABC’s Four Corners can reveal that BHP, one of Australia’s biggest historic emitters, has dumped plans for a facility that could have significantly reduced emissions and has put on ice renewable projects designed to power its iron ore operations in the vast, resource-rich Pilbara region.

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© Illustration: Guardian Design

© Illustration: Guardian Design

© Illustration: Guardian Design

Exclusive: BHP once dubbed climate change an ‘existential’ threat. But leaked documents show it has backtracked on decarbonisation at a vast network of mines

• Read more from the BHP files investigation here

In the middle of 2019, London was sweltering through a heatwave.

Temperature records tumbled. Frail, ill and elderly people died in their hundreds.

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© Composite: Guardian

© Composite: Guardian

© Composite: Guardian