Welcome to Carbon Brief’s Cropped.
We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.
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Key developments
Tree-planting under scrutiny
TREE BLACKOUT: Almost a third of the climate benefits derived from planting trees in order to remove more CO2 from the atmosphere could be offset by changes to atmospheric chemistry and the amount of sunlight reflected back into space, according to a new Science study which was widely covered by the world’s media. Increasing tree cover can alter the reflectiveness, or “albedo”, of the land, making it darker and more absorbent of heat. This albedo effect, combined with changes to atmospheric composition, is responsible for tree-planting having a smaller climate benefit than previously suggested, according to the paper. Writing in the Conversation, the researchers said that “tackling climate change by planting trees has an intuitive appeal”, but, in reality, “could affect the climate in complex ways”.
AFRICAN RISK: Elsewhere in Science, researchers published a policy commentary article arguing that the push for tree-planting across Africa could endanger biodiverse and carbon-rich grassland ecosystems. The researchers examined the likely impact of pledges made under the African Forest Landscape Restoration Initiative, which seeks to restore 100m hectares of degraded land – an area the size of Egypt – by 2030. The initiative is backed by the German government, the World Bank and the non-profit World Resources Institute, according to the Financial Times. The newspaper said that the researchers estimated that half of the land earmarked for regeneration by the project is in grassy savannahs or other non-woodland areas. The Guardian added that, according to the findings, “an area the size of France is threatened by forest restoration initiatives that are taking place in inappropriate landscapes”.
‘ERAS FORESTS’: A debate about the environmental impact of Taylor Swift’s Eras tour – the highest-grossing music tour in history, which will see the singer travel by private jet to perform in 151 locations across five continents from March 2023 to December 2024 – further highlighted the limits of tree-planting to counter emissions. For Forbes, two environmental scientists suggested that Swift could help to offset her private-jet emissions and set a good example by investing heavily in an “Eras forests” carbon-offsetting scheme to replant trees in each location that she has performed in. However, writing on LinkedIn, Richard Reiss, a founder of a climate change educational game, argued that offsetting all of the emissions associated with the Eras tour would require “increasingly unrealistic, or literally impossible, amounts of carbon capture”.
EU passes ‘landmark’ law for nature restoration
‘LANDMARK’ LAW: On Tuesday, the European parliament passed a “landmark” nature restoration law, aiming to “reverse the decline of Europe’s natural habitats” with an EU-wide target of restoring 20% of degraded land and sea areas by 2030, Deutsche Welle reported. The passage of the law occurred despite opposition from farming unions and the European People’s Party – the largest party in parliament. However, the EU council still needs to give the legislation final approval before it can enter into force. Deutsche Welle wrote: “While such a green light would normally be a formality, it is not guaranteed and some recent EU policies have faced blockages and delays because of domestic pushback.” Carbon Brief has just published a piece explaining the new law and its scientific foundation.
‘POLITICAL STORM’: Euronews noted that the margin of the bill’s passage – 329 votes in favour and 275 against, with 24 abstaining – was “a margin larger than initially expected”. Politico reported that the passage of the law “mark[ed] the end of a months-long campaign to kill the legislation” from right-wing groups. However, it added that the “final text was significantly weakened during negotiations”. The “weakened” legislation gives member states more flexibility on how they will implement its guidance, the outlet added. Euronews also reported that “the eruption in January of Europe-wide farmer protests reinvigorated the backlash against the Green Deal”, with the nature restoration law “once again thrust to the centre of the political storm”.
CHAOS IN THE CAPITAL: Meanwhile, farmer protests have continued across the bloc. Reuters reported that “about 900 tractors jammed parts” of Brussels and “riot police fired water cannon at protesters throwing bottles and eggs” while agricultural ministers were meeting in the Belgian capital this week. The Associated Press reported that protesters “spray[ed] Brussels police with liquid manure” in what the newswire described as a “fresh show of force”. It added: “The ministers were keen to show that they were listening, and a group of farmers’ representatives were allowed in for talks”. According to Politico, “the stench of manure, burning tires and teargas pervaded downtown Brussels on Monday” amidst “chaotic scenes”.
Chocolate ‘meltdown’
SHRINKING SWEETS: The price of chocolate surged to an all-time high of just over $6,500 per tonne on the New York and London stock exchanges this week, the trade publication Confectionery Production reported. Bloomberg columnist Javier Blas boldly claimed that “the meltdown in chocolate is coming”, with bars and boxes expected to shrink as prices reach unprecedented levels. According to Blas, four countries – Ivory Coast, Ghana, Cameroon and Nigeria – produce nearly 75% of the world’s cocoa. It is unusual for a major global commodity in that it is mostly grown by poor smallholder farmers, he said.
DWINDLING SUPPLIES: Prices have risen as fierce demand for cocoa has outstripped production by west African small producers, Blas said. Earlier on in February, BBC News reported that farmers have been experiencing poor harvests as a result of the El Niño weather phenomenon, which has been causing drier weather in Ghana and Ivory Coast. In December, Bloomberg reported that, before the dry weather, farmers in Ghana and Ivory Coast also faced a deluge of rainfall at a “crucial time for harvests”. It added: “Puddle-filled drives are bogging down transportation, and the soggy conditions allow diseases like black pod to run rampant, causing beans to rot on trees.”
CLIMATE INFLUENCE: West Africa has seen an increase in agricultural droughts because of climate change, according to the most recent assessment of the continent by the Intergovernmental Panel on Climate Change (IPCC). The report also found that human-caused climate change has already contributed to an increase in heavy rainfall and flooding across nearly all parts of Africa. Back in October, Dr Izidine Pinto, a climate scientist from Mozambique currently working at the Royal Netherlands Meteorological Institute, told Carbon Brief that the impacts of climate change had combined with El Niño to cause “very unusual” weather across the continent.
News and views
BRAZIL BEEF: Three of the world’s largest meatpacking companies sourced beef from ranches responsible for clearing an area of forest the size of Chicago (60,000 hectares) in the Cerrado savannah, a biodiversity hotspot in Brazil, alleged a new investigation by Global Witness covered by BBC News. The investigation said that deforestation linked to Brazil’s three biggest meatpackers – JBS, Marfrig and Minerva – was nearly five times greater in the Cerrado area of Mato Grosso than in the neighbouring Amazon rainforest, where the companies have legal agreements for monitoring their supplies. All three companies dispute Global Witness’s findings and said they are compliant with Brazilian law on deforestation and have their own individual supply chain agreements with Brazilian authorities.
ELEPHANT FATALITIES: Seven people in Malawi have been killed by elephants after the animals were moved as part of a conservation project overseen by two wildlife organisations, including one that was headed by Prince Harry, the Guardian reported. More than 250 elephants were moved from Liwonde national park in southern Malawi to the country’s second-largest protected area, Kasungu, in 2022, the outlet said. After the move, local communities warned that sections of electric fence designed to keep elephants and humans separate were incomplete, the newspaper added. The fatalities reportedly occurred when elephants came into contact with people outside of their protected area, it explained. In a statement seen by the Guardian, the International Fund for Animal Welfare, one of the groups involved in the project, apologised and pledged to finish installing the fence in 2024.
CALI CONFERENCE: Santiago de Cali, or Cali, will host the COP16 biodiversity summit in October, Colombian president Gustavo Petro announced last week. Cali is the country’s third-most-populous city and is the capital of the Colombian Pacific – the “most biodiverse region of Colombia”, Petro said in his remarks. According to a press release from the Colombian environment ministry, the Pacific region contains more than 200 protected areas and nearly 1,300 species of fauna. Colombia One, citing sources within the government, wrote: “The ethnic and cultural diversity of the region has played an important role in this decision.”
DRAX INVESTIGATION: The Panorama investigations team at BBC News has found evidence that the Drax biomass power station in North Yorkshire is still “burning wood from some of the world’s most precious forests”. It said: “Papers obtained by Panorama show Drax took timber from rare forests in Canada it had claimed were ‘no go areas’.” Drax told Panorama that its wood pellets are “sustainable and legally harvested”. Elsewhere, UK prime minister Rishi Sunak caused a stir by attending a farmers’ protest against the Welsh Labour government alongside a group that “has posted conspiracy theories about climate change and which campaigns against net-zero”, the Observer reported.
‘SATURATION POINT’: A 3,378-hectare Australian farm that had been “held up by the red meat sector as a vision of the future” has not been able to offset its own emissions since around 2017, according to a new report covered by the Guardian. The farm had initially planted hundreds of thousands of trees to sequester carbon. However, the outlet added: “[T]hose trees have now matured and passed peak sequestration…and the soil is so carbon rich it can’t sequester any additional CO2 from the atmosphere.” One of the farm’s owners, Mark Wootton, told the Guardian that their “regenerative approach to farming” is still beneficial, even if the farm is no longer carbon-neutral.
‘MEATY’ RICE: Scientists in South Korea have invented “meaty” rice, a hybrid food which they argue could provide an affordable and climate-friendly source of protein, BBC News reported. It explained: “The porous grains are packed with beef muscle and fat cells, grown in the lab. The rice was first coated in fish gelatine to help the beef cells latch on, and the grains were left in a petri dish to culture for up to 11 days.” The scientists, whose research was published in the journal Matter, told BBC News that the food may serve as “relief for famine, military ration or even space food” in the future.
Watch, read, listen
GRAN CHACO: Diálogo Chino reported on how livestock farmers in Argentina’s Gran Chaco are searching for more sustainable farming methods.
FAIR FOR FARMERS: A grassroots farmers’ advocacy non-profit in Florida was behind the “strongest set of workplace heat protections in the US”, the Washington Post wrote.
INDIGENOUS SPOTLIGHT: For the New York Times, law professor Robert Williams argued that “kicking native people off their land is a horrible way to save the planet”.
RAIN ON YOUR PARADE: Rain in the Arctic – increasingly common in a warmer world – is bringing a “cascade of troubling changes”, Yale Environment 360 wrote.
New science
Biodiversity footprints of 151 popular dishes from around the world
Plos One
A new study estimated the biodiversity footprints of 151 popular local dishes from around the world when globally and locally produced. It found that the dishes with the highest biodiversity impacts tend to be those made up of ingredients grown in biodiversity hotspots where agriculture pressures are high, such as fraldinha, a beef dish originating from Brazil, and chana masala, a chickpea curry popular in India. To come up with the results, the researchers considered popular dishes and a range of biodiversity indicators associated with the ingredients of each. The researchers added: “Regardless of assuming locally or globally produced, feedlot or pasture livestock production, vegan and vegetarian dishes presented lower biodiversity footprints than dishes containing meat.”
Rapid sea level rise causes loss of seagrass meadows
Communications Earth & Environment
“Unprecedented” and “rapid” sea level rise drove two common seagrass species out of nearly one-quarter of the sites monitored in the western Gulf of Mexico, according to new research. Scientists used data from long-term ecological monitoring sites, gulf-wide measurements of sea level rise and models of future sea level rise to determine how rising waters might affect seagrass meadows in the future. At one station, they found that two “ubiquitous” species “vanished altogether in just five years”. In modelling future risk, they found 14,000 square kilometres of seagrass habitat could be at risk of disappearing completely by 2050.
Arctic sea ice retreat fuels boreal forest advance
Science
New research found that changes in the Arctic sea ice extent influence the northward spread of the boreal forest, as well as the size of trees there. By combining data from field sites in northern Alaska with satellite data and previously published data from around the Arctic, researchers found a causal link between the advance of the forest and the retreat of the sea ice. They discovered that around the Arctic, “proportionally more tree lines have advanced” in regions of ongoing ice loss. The scientists concluded that “warming and reduced habitat for tundra organisms due to boreal forest advance will critically affect resource availability for Arctic-dwelling people”.
In the diary
- 26 February-1 March: Sixth session of the UN environment assembly | Nairobi
- 29 February: Power Shift Africa event on navigating adaptation post COP28 | Online
- 1 March: 36th meeting of the IPCC Task Force Bureau | Brisbane
- 10 March: Portugal parliamentary elections
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz. Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 28 February 2024: Chocolate crisis; Tree-planting scrutinised; EU restoration law appeared first on Carbon Brief.
Cropped 28 February 2024: Chocolate crisis; Tree-planting scrutinised; EU restoration law
Climate Change
The 2026 budget test: Will Australia break free from fossil fuels?
In 2026, the dangers of fossil fuel dependence have been laid bare like never before. The illegal invasion of Iran has brought pain and destruction to millions across the Middle East and triggered a global energy crisis impacting us all. Communities in the Pacific have been hit especially hard by rising fuel prices, and Australians have seen their cost-of-living woes deepen.
Such moments of crisis and upheaval can lead to positive transformation. But only when leaders act with courage and foresight.
There is no clearer statement of a government’s plans and priorities for the nation than its budget — how it plans to raise money, and what services, communities, and industries it will invest in.
As we count down the days to the 2026-27 Federal Budget, will the Albanese Government deliver a budget for our times? One that starts breaking the shackles of fossil fuels, accelerates the shift to clean energy, protects nature, and sees us work together with other countries towards a safer future for all? Or one that doubles down on coal and gas, locks in more climate chaos, and keeps us beholden to the whims of tyrants and billionaires.
Here’s what we think the moment demands, and what we’ll be looking out for when Treasurer Jim Chalmers steps up to the dispatch box on 12 May.
1. Stop fuelling the fire
2. Make big polluters pay
3. Support everyone to be part of the solution
4. Build the industries of the future
5. Build community resilience
6. Be a better neighbour
7. Protect nature
1. Stop fuelling the fire

In mid-April, Pacific governments and civil society met to redouble their efforts towards a Fossil Fuel Free Pacific. Moving beyond coal, oil and gas is fundamental to limiting warming to 1.5°C — a survival line for vulnerable communities and ecosystems. And as our Head of Pacific, Shiva Gounden, explained, it is “also a path of liberation that frees us from expensive, extractive and polluting fossil fuel imports and uplifts our communities”.
Pacific countries are at the forefront of growing global momentum towards a just transition away from fossil fuels, and it is way past time for Australia to get with the program. It is no longer a question of whether fossil fuel extraction will end, but whether that end will be appropriately managed and see communities supported through the transition, or whether it will be chaotic and disruptive.
So will this budget support the transition away from fossil fuels, or will it continue to prop up coal and gas?
When it comes to sensible moves the government can make right now, one stands out as a genuine low hanging fruit. Mining companies get a full rebate of the excise (or tax) that the rest of us pay on diesel fuel. This lowers their operating costs and acts as a large, ongoing subsidy on fossil fuel production — to the tune of $11 billion a year!
Greenpeace has long called for coal and gas companies to be removed from this outdated scheme, and for the billions in savings to be used to support the clean energy transition and to assist communities with adapting to the impacts of climate change. Will we see the government finally make this long overdue change, or will it once again cave to the fossil fuel lobby?
2. Make big polluters pay

While our communities continue to suffer the escalating costs of climate-fuelled disasters, our Government continues to support a massive expansion of Australia’s export gas industry. Gas is a dangerous fossil fuel, with every tonne of Australian gas adding to the global heating that endangers us all.
Moreover, companies like Santos and Woodside pay very little tax for the privilege of digging up and selling Australians’ natural endowment of fossil gas. Remarkably, the Government currently raises more tax from beer than from the Petroleum Resource Rent Tax (PRRT) — the main tax on gas profits.
Momentum has been building to replace or supplement the PRRT with a 25% tax on gas exports. This could raise up to $17 billion a year — funds that, like savings from removing the diesel tax rebate for coal and gas companies, could be spent on supporting the clean energy transition and assisting communities with adapting to worsening fires, floods, heatwaves and other impacts of climate change.
As politicians arrive in Canberra for budget week, they will be confronted by billboards calling for a fair tax on gas exports. The push now has the support of dozens of organisations and a growing number of politicians. Let’s hope the Treasurer seizes this rare window for reform.
3. Support everyone to be part of the solution
As the price of petrol and diesel rises, electric vehicles (EVs) are helping people cut fuel use and save money. However, while EV sales have jumped since the invasion of Iran sent fuel prices rising, they still only make up a fraction of total new car sales. This budget should help more Australians switch to electric vehicles and, even more importantly, enable more Australians to get around by bike, on foot, and on public transport. This means maintaining the EV discount, investing in public and active transport, and removing tax breaks for fuel-hungry utes and vans.
Millions of Australians already enjoy the cost-saving benefits of rooftop solar, batteries, and getting off gas. This budget should enable more households, and in particular those on lower incomes, to access these benefits. This means maintaining the Cheaper Home Batteries Program, and building on the Household Energy Upgrades Fund.
4. Build the industries of the future

If we’re to transition away from fossil fuels, we need to be building the clean industries of the future.
No state is more pivotal to Australia’s energy and industrial transformation than Western Australia. The state has unrivaled potential for renewable energy development and for replacing fossil fuel exports with clean exports like green iron. Such industries offer Western Australia the promise of a vibrant economic future, and for Australia to play an outsized positive role in the world’s efforts to reduce emissions.
However, realising this potential will require focussed support from the Federal Government. Among other measures, Greenpeace has recommended establishing the Australasian Green Iron Corporation as a joint venture between the Australian and Western Australian governments, a key trading partner, a major iron ore miner and steel makers. This would unite these central players around the complex task of building a large-scale green iron industry, and unleash Western Australia’s potential as a green industrial powerhouse.
5. Build community resilience
Believe it or not, our Government continues to spend far more on subsidising fossil fuel production — and on clearing up after climate-fuelled disasters — than it does on helping communities and industries reduce disaster costs through practical, proven methods for building their resilience.
Last year, the Government estimated that the cost of recovery from disasters like the devastating 2022 east coast floods on 2019-20 fires will rise to $13.5 billion. For contrast, the Government’s Disaster Ready Fund – the main national source of funding for disaster resilience – invests just $200 million a year in grants to support disaster preparedness and resilience building. This is despite the Government’s own National Emergency Management Agency (NEMA) estimating that for every dollar spent on disaster risk reduction, there is a $9.60 return on investment.
By redirecting funds currently spent on subsidising fossil fuel production, the Government can both stop incentivising climate destruction in the first place, and ensure that Australian communities and industries are better protected from worsening climate extremes.
No communities have more to lose from climate damage, or carry more knowledge of practical solutions, than Aboriginal and Torres Strait Islander peoples. The budget should include a dedicated First Nations climate adaptation fund, ensuring First Nations communities can develop solutions on their own terms, and access the support they need with adapting to extreme heat, coastal erosion and other escalating challenges.
6. Be a better neighbour
The global response to climate change depends on the adequate flow of support from developed economies like Australia to lower income nations with shifting to clean energy, adapting to the impacts of climate change, and addressing loss and damage.
Such support is vital to building trust and cooperation, reducing global emissions, and supporting regional and global security by enabling countries to transition away from fossil fuels and build greater resilience.
Despite its central leadership role in this year’s global climate negotiations, our Government is yet to announce its contribution to international climate finance for 2025-2030. Greenpeace recommends a commitment of $11 billion for this five year period, which is aligned with the global goal under the Paris Agreement to triple international climate finance from current levels.
This new commitment should include additional funding to address loss and damage from climate change and a substantial contribution to the Pacific Resilience Facility, ensuring support is accessible to countries and communities that need it most. It should also see Australia get firmly behind the vision of a Fossil Fuel Free Pacific.
7. Protect nature

There is no safe planet without protection of the ecosystems and biodiversity that sustain us and regulate our climate.
Last year the Parliament passed important and long overdue reforms to our national environment laws to ensure better protection for our forests and other critical ecosystems. However, the Government will need to provide sufficient funding to ensure the effective implementation of these reforms.
Greenpeace has recommended $500 million over four years to establish the National Environment Agency — the body responsible for enforcing and monitoring the new laws — and a further $50 million to Environment Information Australia for providing critical information and tools.
Further resourcing will also be required to fulfil the crucial goal of fully protecting 30% of Australian land and seas by 2030. This should include $1 billion towards ending deforestation by enabling farmers and loggers to retool away from destructive practices, $2 billion a year for restoring degraded lands, $5 billion for purchasing and creating new protected areas, and $200 million for expanding domestic and international marine protected areas.
Conclusion
This is not the first time that conflict overseas has triggered an energy crisis, or that a budget has been preceded by a summer of extreme weather disasters, highlighting the urgent need to phase out fossil fuels. What’s different in 2026 is the availability of solutions. Renewable energy is now cheaper and more accessible than ever before. Global momentum is firmly behind the transition away from fossil fuels. The Albanese Government, with its overwhelming majority, has the chance to set our nation up for the future, or keep us stranded in the past. Let’s hope it makes some smart choices.
The 2026 budget test: Will Australia break free from fossil fuels?
Climate Change
What fossil fuels really cost us in a world at war
Anne Jellema is Executive Director of 350.org.
The war on Iran and Lebanon is a deeply unjust and devastating conflict, killing civilians at home, destroying lives, and at the same time sending shockwaves through the global economy. We, at 350.org, have calculated, drawing on price forecasts from the International Monetary Fund (IMF) and Goldman Sachs, just how much that volatility is costing us.
Even under the IMF’s baseline scenario – a de facto “best case” scenario with a near-term end to the war and related supply chain disruptions – oil and gas price spikes are projected to cost households and businesses globally more than $600 billion by the end of the year. Under the IMF’s “adverse scenario”, with prolonged conflict and sustained price pressures, we estimate those additional costs could exceed $1 trillion, even after accounting for reduced demand.
Which is why we urgently need a power shift. Governments are under growing pressure to respond to rising fuel and food costs and deepening energy poverty. And it’s becoming clearer to both voters and elected officials that fossil dependence is not only expensive and risky, but unnecessary.
People who can are voting with their wallets: sales of solar panels and electric vehicles are increasing sharply in many countries. But the working people who have nothing to spare, ironically, are the ones stuck with using oil and gas that is either exorbitantly expensive or simply impossible to get.
Drain on households and economies
In India, street food vendors can’t get cooking gas and in the Philippines, fishermen can’t afford to take their boats to sea. A quarter of British people say that rising energy tariffs will leave them completely unable to pay their bills. This is the moment for a global push to bring abundant and affordable clean energy to all.
In April, we released Out of Pocket, our new research report on how fossil fuels are draining households and economies. We were surprised by the scale of what we found. For decades, governments have reassured people that energy price spikes are unfortunate but unavoidable – the result of distant conflicts, market forces or geopolitical shocks beyond anyone’s control. But the numbers tell a different story.
What we are living through today is not an energy crisis. It is a fossil fuel crisis. In just the first 50 days of the Middle East conflict, soaring oil and gas prices have siphoned an estimated $158 billion–$166 billion from households and businesses worldwide. That is money extracted directly from people’s pockets and transferred, almost instantly, into fossil fuel company balance sheets. And this figure only captures the immediate impact of price spikes, not the permanent economic drain of fossil dependence. Fossil fuels don’t just cost us once, they cost us over and over again.
First, through our bills. Every time there is a war, an embargo or a supply disruption, fossil fuel prices surge. For ordinary people, this means higher costs for energy, transport and food. Many Global South countries have little or no fiscal space to buffer the shock; instead, workers and families pay the price.
Second, through our taxes. Governments around the world continue to pour vast sums of public money into fossil fuel subsidies. These are often justified as a way to protect the most vulnerable at the petrol pump or in their homes. But in reality, the benefits are overwhelmingly captured by wealthier households and corporations. The poorest 20% receive just a fraction of this support, while public finances are drained.
Third, through climate impacts. New research across more than 24,000 global locations gives a granular account of the true costs of extreme heat, sea level rise and falling agricultural yields. Using this data to update IMF modelling of the social cost of carbon, we found that fossil fuel impacts on health and livelihoods amount to over $9 trillion a year. This is the biggest subsidy of all, because these massive and mounting costs are not charged to Big Oil – they are paid for by governments and households, with the poorest shouldering the lion’s share.
Massive transfer of wealth to fossil fuel industry
Adding up direct subsidies, tax breaks and the unpaid bill for climate damages, the total transfer of wealth from the public to the fossil fuel industry amounts to $12 trillion even in a “normal” year without a global oil shock. That’s more than 50% higher than the IMF has previously estimated, and equivalent to a staggering $23 million a minute.
The fossil fuel industry has become extraordinarily adept at profiting from instability. When conflict drives up prices, companies do not lose, they gain. In the current crisis, oil producers and commodity traders are on track to secure tens of billions of dollars in additional windfall profits, even as households face rising bills and governments struggle to manage the fallout.
Fossil fuel crisis offers chance to speed up energy transition, ministers say
This growing disconnect is impossible to ignore. Investors are advised to buy into fossil fuel firms precisely because of their ability to generate profits in times of crisis. Meanwhile, ordinary people are told to tighten their belts.
In 2026, unlike during the oil shocks of the 1970s, clean energy is no longer a distant alternative. Now, even more than when gas prices spiked due to Russia’s invasion of Ukraine in 2022, renewables are often the cheapest option available. Solar and wind can be deployed quickly, at scale, and without the volatility that defines fossil fuel markets.
How to transition from dirty to clean energy
The solutions are clear. Governments must implement permanent windfall taxes on fossil fuel companies to ensure that extraordinary profits generated during crises are redirected to support households. These revenues can be used to reduce energy bills, invest in public services, and accelerate the rollout of clean energy.
Second, we must shift subsidies away from fossil fuels and towards renewable solutions, particularly those that can be deployed quickly and equitably, such as rooftop and community solar. This is not just about cutting emissions. It is about building a more stable, fair and resilient energy system.
Finally, we need binding plans to phase out fossil fuels altogether, replacing them with homegrown renewable energy that can shield economies from future shocks. Because what the current crisis has made clear is this: as long as we remain dependent on fossil fuels, we remain vulnerable – to conflict, to price volatility and to the escalating impacts of climate change.
The true price of fossil fuels is no longer hidden. It is visible in rising bills, strained public finances and communities pushed to the brink. And it is being paid, every day, by ordinary people around the world.
It’s time for the great power shift.
Full details on the methodology used for this report are available here.
The Great Power Shift is a new campaign by 350.org global campaign to pressure governments to bring down energy bills for good by ending fossil fuel dependence and investing in clean, affordable energy for all


The post What fossil fuels really cost us in a world at war appeared first on Climate Home News.
Climate Change
Traditional models still ‘outperform AI’ for extreme weather forecasts
Computer models that use artificial intelligence (AI) cannot forecast record-breaking weather as well as traditional climate models, according to a new study.
It is well established that AI climate models have surpassed traditional, physics-based climate models for some aspects of weather forecasting.
However, new research published in Science Advances finds that AI models still “underperform” in forecasting record-breaking extreme weather events.
The authors tested how well both AI and traditional weather models could simulate thousands of record-breaking hot, cold and windy events that were recorded in 2018 and 2020.
They find that AI models underestimate both the frequency and intensity of record-breaking events.
A study author tells Carbon Brief that the analysis is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.
AI weather forecasts
Extreme weather events, such as floods, heatwaves and storms, drive hundreds of billions of dollars in damages every year through the destruction of cropland, impacts on infrastructure and the loss of human life.
Many governments have developed early warning systems to prepare the general public and mobilise disaster response teams for imminent extreme weather events. These systems have been shown to minimise damages and save lives.
For decades, scientists have used numerical weather prediction models to simulate the weather days, or weeks, in advance.
These models rely on a series of complex equations that reproduce processes in the atmosphere and ocean. The equations are rooted in fundamental laws of physics, based on decades of research by climate scientists. As a result, these models are referred to as “physics-based” models.
However, AI-based climate models are gaining popularity as an alternative for weather forecasting.
Instead of using physics, these models use a statistical approach. Scientists present AI models with a large batch of historical weather data, known as training data, which teaches the model to recognise patterns and make predictions.
To produce a new forecast, the AI model draws on this bank of knowledge and follows the patterns that it knows.
There are many advantages to AI weather forecasts. For example, they use less computing power than physics-based models, because they do not have to run thousands of mathematical equations.
Furthermore, many AI models have been found to perform better than traditional physics-based models at weather forecasts.
However, these models also have drawbacks.
Study author Prof Sebastian Engelke, a professor at the research institute for statistics and information science at the University of Geneva, tells Carbon Brief that AI models “depend strongly on the training data” and are “relatively constrained to the range of this dataset”.
In other words, AI models struggle to simulate brand new weather patterns, instead tending forecast events of a similar strength to those seen before. As a result, it is unclear whether AI models can simulate unprecedented, record-breaking extreme events that, by definition, have never been seen before.
Record-breaking extremes
Extreme weather events are becoming more intense and frequent as the climate warms. Record-shattering extremes – those that break existing records by large margins – are also becoming more regular.
For example, during a 2021 heatwave in north-western US and Canada, local temperature records were broken by up to 5C. According to one study, the heatwave would have been “impossible” without human-caused climate change.
The new study explores how accurately AI and physics-based models can forecast such record-breaking extremes.
First, the authors identified every heat, cold and wind event in 2018 and 2020 that broke a record previously set between 1979 and 2017. (They chose these years due to data availability.) The authors use ERA5 reanalysis data to identify these records.
This produced a large sample size of record-breaking events. For the year 2020, the authors identified around 160,000 heat, 33,000 cold and 53,000 wind records, spread across different seasons and world regions.
For their traditional, physics-based model, the authors selected the High RESolution forecast model from the Integrated Forecasting System of the European Centre for Medium-Range Weather Forecasts. This is “widely considered as the leading physics-based numerical weather prediction model”, according to the paper.
They also selected three “leading” AI weather models – the GraphCast model from Google Deepmind, Pangu-Weather developed by Huawei Cloud and the Fuxi model, developed by a team from Shanghai.
The authors then assessed how accurately each model could forecast the extremes observed in the year 2020.
Dr Zhongwei Zhang is the lead author on the study and a researcher at Karlsruhe Institute of Technology. He tells Carbon Brief that many AI weather forecast models were built for “general weather conditions”, as they use all historical weather data to train the models. Meanwhile, forecasting extremes is considered a “secondary task” by the models.
The authors explored a range of different “lead times” – in other words, how far into the future the model is forecasting. For example, a lead time of two days could mean the model uses the weather conditions at midnight on 1 January to simulate weather conditions at midnight on 3 January.
The plot below shows how accurately the models forecasted all extreme events (left) and heat extremes (right) under different lead times. This is measured using “root mean square error” – a metric of how accurate a model is, where a lower value indicates lower error and higher accuracy.
The chart on the left shows how two of the AI models (blue and green) performed better than the physics-based model (black) when forecasting all weather across the year 2020.
However, the chart on the right illustrates how the physics-based model (black) performed better than all three AI models (blue, red and green) when it came to forecasting heat extremes.

The authors note that the performance gap between AI and physics-based models is widest for lower lead times, indicating that AI models have greater difficulty making predictions in the near future.
They find similar results for cold and wind records.
In addition, the authors find that AI models generally “underpredict” temperature during heat records and “overpredict” during cold records.
The study finds that the larger the margin that the record is broken by, the less well the AI model predicts the intensity of the event.
‘Warning shot’
Study author Prof Erich Fischer is a climate scientist at ETH Zurich and a Carbon Brief contributing editor. He tells Carbon Brief that the result is “not unexpected”.
He adds that the analysis is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.
The analysis, he continues, is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.
AI models are likely to continue to improve, but scientists should “not yet” fully replace traditional forecasting models with AI ones, according to Fischer.
He explains that accurate forecasts are “most needed” in the runup to potential record-breaking extremes, because they are the trigger for early warning systems that help minimise damages caused by extreme weather.
Leonardo Olivetti is a PhD student at Uppsala University, who has published work on AI weather forecasting and was not involved in the study.
He tells Carbon Brief that “many other studies” have identified issues with using AI models for “extremes”, but this paper is novel for its specific focus on extremes.
Olivetti notes that AI models are already used alongside physics-based models at “some of the major weather forecasting centres around the world”. However, the study results suggest “caution against relying too heavily on these [AI] models”, he says.
Prof Martin Schultz, a professor in computational earth system science at the University of Cologne who was not involved in the study, tells Carbon Brief that the results of the analysis are “very interesting, but not too surprising”.
He adds that the study “justifies the continued use of classical numerical weather models in operational forecasts, in spite of their tremendous computational costs”.
Advances in forecasting
The field of AI weather forecasting is evolving rapidly.
Olivetti notes that the three AI models tested in the study are an “older generation” of AI models. In the last two years, newer “probabilistic” forecast models have emerged that “claim to better capture extremes”, he explains.
The three AI models used in the analysis are “deterministic”, meaning that they only simulate one possible future outcome.
In contrast, study author Engelke tells Carbon Brief that probabilistic models “create several possible future states of the weather” and are therefore more likely to capture record-breaking extremes.
Engelke says it is “important” to evaluate the newer generation of models for their ability to forecast weather extremes.
He adds that this paper has set out a “protocol” for testing the ability of AI models to predict unprecedented extreme events, which he hopes other researchers will go on to use.
The study says that another “promising direction” for future research is to develop models that combine aspects of traditional, physics-based weather forecasts with AI models.
Engelke says this approach would be “best of both worlds”, as it would combine the ability of physics-based models to simulate record-breaking weather with the computational efficiency of AI models.
Dr Kyle Hilburn, a research scientist at Colorado State University, notes that the study does not address extreme rainfall, which he says “presents challenges for both modelling and observing”. This, he says, is an “important” area for future research.
The post Traditional models still ‘outperform AI’ for extreme weather forecasts appeared first on Carbon Brief.
Traditional models still ‘outperform AI’ for extreme weather forecasts
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