We cannot afford to make the same mistake as we did with gas. If tech companies are going to use our land, energy and water for AI, they must pay their fair share of tax

• Follow our Australia news live blog for latest updates

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

Over the past few months, tens of thousands of Australians have emailed their local MP calling for a 25% tax on gas exports. More than 2,200 people have even chipped in their own money to fund billboards promoting the idea.

Why?

Australians are world leaders in rooftop solar and home batteries - but greater energy efficiency could make them a triple threat

• 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

For David and Ruth Hudspeth, the process of turning their 1950s brick veneer house in Melbourne’s eastern suburbs into a cosy, efficient and fully electric home took several years.

They started with insulation in the ceiling and replacing an old and “pretty dangerous” gas heater. They swapped their leaky hot water system for a heat pump, and built a roof over the outdoor deck for shade and extra solar panels, later adding an electric car and a home battery into the mix.

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.

US president announces plans for two new coal plants, in Alaska and West Virginia, using Defense Production Act

Donald Trump is using wartime presidential authority to hand $700m to coal-fired power plants in the US, the latest move by the president to bolster what he called “clean, beautiful coal”, despite it being the dirtiest of fossil fuels.

“Today, we’re taking historic action to bring down the price of energy and the cost of living for all Americans with the power of clean, beautiful coal,” he said at a press conference on Thursday.

Some will question its credibility – but the alternative future to the one imagined in the Global Justice Report is far more bleak

• ‘An equal and habitable world is possible’: academics set out sweeping vision for planetary survival

In our increasingly dystopian world, who wouldn’t want to at least be open to a utopian antidote? The Global Justice Report, published on Thursday, outlines how to build a prosperous, equitable world within safe planetary boundaries. It’s a push from the modern eco-socialist left in a global battle for ideas that will shape the future.

Based on past social achievements and future energy transformation, it indicates that the overwhelming majority of people on the planet could, by the end of the century, work less and earn more – while keeping temperatures down and avoiding much of the current destruction of nature. It is an ambitious, comprehensive and upbeat plan, and a stronger argument around which to build a political campaign than abstract goals of net zero or decarbonisation.

Government rejects offshore rubbish being shipped to Fiji and burned after opposition from traditional landowners and tourism operators

The Fijian government has rejected a plan by an Australian billionaire to burn rubbish for energy in Fiji after backlash from traditional landowners and tourism operators.

The plan to ship non-recyclable rubbish from across the region to Fiji, popular with tourists for its pristine beaches, and build an incinerator to consume 900,000 tonnes of waste a year had been labelled “waste colonialism” by villagers.

While many US city councils have passed moratoriums, Monterey Park is first where residents have voted on a ban

• Sign up for the Breaking News US newsletter email

Residents in Monterey Park, California, became the first in the US to vote on a permanent ban on datacenters on Tuesday, and early results indicate a resounding victory for the prohibition.

While many cities and counties have already passed temporary or indefinite moratoriums via their local governments, Monterey Park would be the first to do so through a ballot initiative.

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

• Get the Guardian Weekly delivered to your home address

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.

Investigation reveals regulator let firms off the hook on cleanup bonds despite backlog that will take decades to clear

When Christiaan van Woudenberg moved to Erie, Colorado, in 2007, he never imagined he would become an anti-fracking activist. He simply thought he was buying his dream home – a four-bedroom with a panoramic mountain view, 30 minutes north of downtown Denver.

Then, in 2014, the drilling started. Oil and gas rigs sprang up, some just 800ft (240m) from his bedroom window. The dream turned to nightmare: loud noises rumbled all night long, and the air stank like exhaust. Neighbors started getting headaches and nosebleeds, and Van Woudenberg developed new respiratory issues. He kept his windows shut and worried about his daughters going outside.

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

Read more:

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

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

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.

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.

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.

Grattan Institute calls on Labor to set policies that will further reduce the use of gas in order to meet net zero targets

• Sign up for climate and environment editor Adam Morton’s free Clear Air newsletter here

After more than a half a century of growth, the use of gas in Australia has peaked in all sectors and entered a “structural decline”. But use will need to fall fast to meet climate targets, according to new research from an influential thinktank.

The Grattan Institute warned the government had failed to acknowledge the decline and instead needed policies to further reduce gas use and avoid the need for expensive carbon capture technologies to meet net zero targets.

Sign up to get climate and environment editor Adam Morton’s Clear Air column as a free newsletter

Labour leadership hopeful says NI reduction for firms could ‘incentivise’ hiring, particularly of younger people

Wes Streeting has backed calls for national insurance cuts for businesses, and for the government to drill for oil and gas in the North Sea.

The former health secretary and potential Labour leadership candidate told the Sunday Times there should be a “targeted reduction” of employers’ national insurance contribution as a way to “actively incentivise” hiring, particularly of young people.

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.

Guardian investigation shows how US presidency blurs line between policy and enrichment of American ruling family and those around it

On a graffitied Sarajevo backstreet, a path leads past an overgrown patch of garden to a white door. Beyond is the registered office of a company that is on the brink of winning contracts worth more than $1bn.

AAFS Infrastructure and Energy is close to securing a concession to build and operate a pipeline across the Balkans to allow fossil gas shipped from the US to replace supplies that come from Russia. “This could be the most important infrastructure project ever in Bosnia and Herzegovina,” says one of the country’s top officials, who, like others, asks to remain anonymous to discuss sensitive negotiations.

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.

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.

As summers become hotter, air conditioner sales are booming. If you’re looking to invest, here’s what to consider

When a heatwave struck the UK this week, Jon Connorton, a software developer, began monitoring temperatures inside his east Hampshire terrace house. With some rooms reaching close to 40C, it was time to deploy the air conditioner. “We just wheel it out in emergencies,” he said. “We were having trouble sleeping.”

Connorton and his wife have a portable air conditioner. These plug-in devices cool interior air by removing heat from it and blowing that heat outside, typically via a large hose slung from a window or door.