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When Romain Ioualalen started a new campaigning job at Oil Change International, he was tasked with putting fossil fuels on the agenda of international climate talks.

That was in April 2020, just after the start of the pandemic. He told Climate Home recently that “it seemed like a pretty distant dream” at the time.

In fact, he used to joke that he had “found the only international climate policy job that didn’t require going to Cop because fossil fuels would never be a thing there”.

But become a thing they have. When Cop18 was held in Gulf oil and gas producer Qatar in 2012, the IISD think tank’s 28,000-word summary only mentioned fossil fuels once.

Those two words pop up 46 times in the same report produced after Cop28 where governments agreed for the first time to transition away from all fossil fuels in energy systems.

Asked why fossil fuels had gone from the fringes to the centre of negotiations, experts cited numerous reasons, which all worked together to build momentum over the years.

They referred to the falling cost of renewables, the mounting climate impacts, the interventions from authoritative mainstream voices, the tireless campaigning of the Pacific islands and civil society, and a healthy dose of good fortune.

Fossil fuels weren’t always absent though. Right at the start of climate talks, in 1992, the United Nations Framework Convention on Climate Change (UNFCCC), mentions them. Although it does not condemn them, it implies they have got to go or, at least, be reduced.

It does this by recognising the “special difficulties of those countries, especially developing countries, whose economies are particularly dependent on fossil fuel production, use and exportation, as a consequence of action taken on limiting greenhouse gas emissions”.

Then Brazilian president Fernando Collor de Mello makes a toast to world leaders at the Rio Earth Summit (Photos: United Nations)

Kept outside

But after governments signed this landmark text, they gathered every year at a Cop for a quarter of a century without any of their agreements mentioning the need to reduce fossil fuels again.

Asked why, Joanna Depledge, who studies climate talks at Cambridge University, said fossil fuels had been actively kept outside the process, predominately by the Opec cartel of oil producers – Saudi Arabia, in particular – and by the USA.

She said Opec, the Saudis and others wanted, as they still do, to talk about emissions in general rather than particular sources of emissions like fossil fuels. 

For a long time “there wasn’t much questioning of that,” she said, “because the so-called comprehensive approach was seen as a good thing”. “There’s also an aversion to policy prescription in the climate change regime,” she added, “apart from the EU and the vulnerables, countries don’t like an international regime telling them what to do in particular sectors”. 

For decades, all the negotiations were focussed on signing an agreement that would commit all countries to take action to limit global warming. After several time and hope-depleting failures, they eventually succeeded in Paris in 2015.

Diplomats celebrate as the Paris Agreement is agreed in 2015 (Photos: UNFCCC)

Having agreed on the headline goal, they could discuss how to go about meeting it. That’s when one particular fossil fuel rose up the agenda – the most polluting one, coal.

Depledge says that it was Poland that unwittingly put coal in the crosshairs. The country is Europe’s biggest defender of coal and hosted the talks in 2008, 2013 and 2018.

In 2018, Cop24 was held in the heart of Poland’s coal country in Katowice, where delegates choked on polluted air and gazed at adverts from the Cop’s partners in the coal industry. 

The next year, the UK was announced as host of Cop26. Its coal record couldn’t be more different to Poland’s. Between 1990 and 2019, it reduced its coal use for electricity by 96% – replacing it mainly with gas and later wind.

Its government was keen to export this strategy to other countries, co-founding the Powering Past Coal Alliance in 2017. The work of launching this alliance “built momentum around having coal as the main outcome of Cop26”, said Center for Climate and Energy Solutions vice-president Kaveh Guilanpour.

A protester covers her mouth as she marches through Katowice during Cop24 (Photos: Greenpeace)

Then UK prime minister Boris Johnson confirmed this focus, saying Cop26 should be about “coal, car, cash and trees” and Cop president Alok Sharma said the summit should “consign coal to history”.

It was not just the UK with coal in the crosshairs though. The head of the United Nations, Antonio Guterres had been calling for an end to new coal power plants since 2019 and in August 2021 said the latest IPCC scientific report must “must sound a death knell for coal and fossil fuels, before they destroy our planet.”

The same year, China, Japan and South Korea all said they would stop financing new foreign coal-fired power plants – a decision most Western nations and multilateral development banks had already taken.

With this momentum, the UK was able to convince governments to agree to “phase down” coal – the first-ever mention of a fossil fuel in a Cop agreement.

Not every country agreed to this enthusiastically though. Between them, China and India use two-thirds of the world’s coal and they teamed up to water down the language at the last minute from “phase out” to “phase down”, sparking tears from Sharma.

India’s environment minister Bhupender Yadav speaks to Sharma at Cop26 (Photos: Kiara Worth/UNFCCC)

The next year, Cop delegates gathered in the Egyptian Red Sea resort of Sharm el-Sheikh. For the first week, the Cop looked set to be about one issue only. Not fossil fuels but rich countries paying for the loss and damage poorer ones are suffering from as a result of climate change.

That changed at the end of the first week of negotiations when Bloomberg reported that India had called on the Cop president to target all fossil fuels in the Cop27 agreement. Depledge said India was angered that the fossil fuel the country relies on – coal- was being singled out while the oil and gas that rich nations favour went unchallenged.

By that point, oil and gas had already started to feel some of the heat that coal was under.  Guterres’ rhetoric was broadening to all fossil fuels and Denmark and Costa Rica had co-founded at Cop26 a coalition of countries pledging to stop pumping oil and gas.

Ioualalen, who was involved in the initiative, said that was a “big, big thing” as it “put the notion that you could actually take measures to constrain the development of fossil fuel production on the map”.

So when India made their intervention in Egypt, they were pushing at a more open door. A significant minority of countries – including the European Union, small islands, Chile and Colombia – seized on the proposal.

Ministers from the “high ambition coalition” hold a press conference at Cop27 (Photos: Kiara Worth/UNFCCC)

But oil and gas-reliant states like Saudi Arabia, Iran and Russia voiced their opposition. The Egyptian presidency left it out and, at 4am on the day many negotiators were flying home, governments from the “high-ambition coalition” accepted defeat

After it was agreed, these ministers showed their displeasure. Tuvalu called it a “missed opportunity”, Chile said they were “very disappointed” and the EU said it was “not enough on [emissions reduction]”.

They had lost the battle but sounded determined to win the war and the decision to make Sultan Al-Jaber, the CEO of oil and gas firm Adnoc, the next Cop president only ramped up the focus on fossil fuels.

“The Cop28 presidency, as being a petro state, was initially a major concern”, recalled Harjeet Singh, Climate Action Network’s head of global political strategy. “However, it ironically served as a unique opportunity to exert significant pressure, leading to substantial discussions on curtailing all three fossil fuels.”

Singh said “this momentum transformed what was once a fleeting mention of fossil fuels at Cop26 in 2021 into a robust debate within the UN climate change dialogues” and allowed campaigners to highlight the “hypocrisy of rich nations targeting coal use in the developing world while simultaneously expanding oil and gas production”.

Al Jaber himself responded to criticism by saying that a fossil phase out was both “essential” and “inevitable” despite his company’s plans to increase production. Guilanpour said that the UAE’s status as an oil and gas producer and ally of Saudi Arabia gave them “credibility” with potential opponents of the fossil fuel phase out.

Sultan Al Jaber and Simon Stiell celebrate as the Cop28 agreement is passed (Photos: Cop28/Mahmoud Khaled)

By the time India hosted the G20 summit in Delhi last September, fossil fuels were at the very top of the climate agenda. India tried but failed to get 20 of the world’s biggest economies to agree to phase out fossil fuels.

The battleground was set for Cop28, where fossil fuels came to dominate the talks after the loss and damage fund had been agreed on the first day. But the Saudis and others wouldn’t agree to “phase out” or “phase down”, preferring the eventual compromise of “transitioning away from fossil fuels”.

After Cop28, Saudi Arabia’s energy minister downplayed the significance of this agreement, calling it just an “option” on an “a la carte menu” and stressing the difference from “phase out” – an interpretation that E3G analyst Tom Evans called “incredibly misleading”.

Despite the Saudi dismissal, the head of the UNFCCC Simon Stiell called it the “beginning of the end” for the fossil fuel era. Guilanpour celebrated the decision too, saying that if that had been offered at the start of the year, “most people would have bitten your hand off”.

With that now agreed, fossil fuels are likely to take a back seat in the negotiations. Depledge predicted they would “move away from words and on to hard cash and the dollars”, with a new post-2025 climate finance target set to be agreed at Cop29.

Outside of negotiations, governments’ plans to keep producing fossil fuels are likely to come under ever more scrutiny in the media and public discourse, 

That became clear just hours after the Cop28 agreement was signed. In the room next door, Brazilian environment minister Marina Silva and then German foreign minister Annalena Baerbock held back-to-back press conferences at which they were both grilled on how their governments’ production plans fit with the deal they’d just agreed.


Ioualalen said that how climate leadership is judged has now changed. "You cannot just say that you are going to be a climate leader, that you're going to reach net zero, if you're going to continue increasing your oil and gas production - that's become very clear," he said.

And when governments release their next round of climate plans in 2025, the role of fossil fuels will be closely watched. That year's Cop presidency will be Brazil - whose competing desires to pump more oil and gas and to save the Amazon rainforest and planet are sure to be noted.

While investment into the supply of fossil fuels is still rising, the IEA predicts that demand will soon peak. Whether supply is restrained and whether demand plateaus or falls sharply are two of the key climate questions of the decade.

Climate Home asked Ioualalen whether all the years of work getting fossil fuels on the agenda will help with that. "It's too early to say", he replied. "I'm seeing a lot of debate on the outcomes [of Cop28] on whether it's historic or an absolute catastrophe or greenwash etcetera - the reality is that it's probably a bit of both".

The post How fossil fuels went from sidelines to headlines in climate talks appeared first on Climate Home News.

How fossil fuels went from sidelines to headlines in climate talks

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Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate

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We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.

This is an online version of Carbon Brief’s fortnightly Cropped email newsletter.
Subscribe for free here.

Key developments

Food inflation on the rise

DELUGE STRIKES FOOD: Extreme rainfall and flooding across the Mediterranean and north Africa has “battered the winter growing regions that feed Europe…threatening food price rises”, reported the Financial Times. Western France has “endured more than 36 days of continuous rain”, while farmers’ associations in Spain’s Andalusia estimate that “20% of all production has been lost”, it added. Policy expert David Barmes told the paper that the “latest storms were part of a wider pattern of climate shocks feeding into food price inflation”.

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NO BEEF: The UK’s beef farmers, meanwhile, “face a double blow” from climate change as “relentless rain forces them to keep cows indoors”, while last summer’s drought hit hay supplies, said another Financial Times article. At the same time, indoor growers in south England described a 60% increase in electricity standing charges as a “ticking timebomb” that could “force them to raise their prices or stop production, which will further fuel food price inflation”, wrote the Guardian.

TINDERBOX’ AND TARIFFS: A study, covered by the Guardian, warned that major extreme weather and other “shocks” could “spark social unrest and even food riots in the UK”. Experts cited “chronic” vulnerabilities, including climate change, low incomes, poor farming policy and “fragile” supply chains that have made the UK’s food system a “tinderbox”. A New York Times explainer noted that while trade could once guard against food supply shocks, barriers such as tariffs and export controls – which are being “increasingly” used by politicians – “can shut off that safety valve”.

El Niño looms

NEW ENSO INDEX: Researchers have developed a new index for calculating El Niño, the large-scale climate pattern that influences global weather and causes “billions in damages by bringing floods to some regions and drought to others”, reported CNN. It added that climate change is making it more difficult for scientists to observe El Niño patterns by warming up the entire ocean. The outlet said that with the new metric, “scientists can now see it earlier and our long-range weather forecasts will be improved for it.”

WARMING WARNING: Meanwhile, the US Climate Prediction Center announced that there is a 60% chance of the current La Niña conditions shifting towards a neutral state over the next few months, with an El Niño likely to follow in late spring, according to Reuters. The Vibes, a Malaysian news outlet, quoted a climate scientist saying: “If the El Niño does materialise, it could possibly push 2026 or 2027 as the warmest year on record, replacing 2024.”

CROP IMPACTS: Reuters noted that neutral conditions lead to “more stable weather and potentially better crop yields”. However, the newswire added, an El Niño state would mean “worsening drought conditions and issues for the next growing season” to Australia. El Niño also “typically brings a poor south-west monsoon to India, including droughts”, reported the Hindu’s Business Line. A 2024 guest post for Carbon Brief explained that El Niño is linked to crop failure in south-eastern Africa and south-east Asia.

News and views

  • DAM-AG-ES: Several South Korean farmers filed a lawsuit against the country’s state-owned utility company, “seek[ing] financial compensation for climate-related agricultural damages”, reported United Press International. Meanwhile, a national climate change assessment for the Philippines found that the country “lost up to $219bn in agricultural damages from typhoons, floods and droughts” over 2000-10, according to Eco-Business.
  • SCORCHED GRASS: South Africa’s Western Cape province is experiencing “one of the worst droughts in living memory”, which is “scorching grass and killing livestock”, said Reuters. The newswire wrote: “In 2015, a drought almost dried up the taps in the city; farmers say this one has been even more brutal than a decade ago.”
  • NOUVELLE VEG: New guidelines published under France’s national food, nutrition and climate strategy “urged” citizens to “limit” their meat consumption, reported Euronews. The delayed strategy comes a month after the US government “upended decades of recommendations by touting consumption of red meat and full-fat dairy”, it noted. 
  • COURTING DISASTER: India’s top green court accepted the findings of a committee that “found no flaws” in greenlighting the Great Nicobar project that “will lead to the felling of a million trees” and translocating corals, reported Mongabay. The court found “no good ground to interfere”, despite “threats to a globally unique biodiversity hotspot” and Indigenous tribes at risk of displacement by the project, wrote Frontline.
  • FISH FALLING: A new study found that fish biomass is “falling by 7.2% from as little as 0.1C of warming per decade”, noted the Guardian. While experts also pointed to the role of overfishing in marine life loss, marine ecologist and study lead author Dr Shahar Chaikin told the outlet: “Our research proves exactly what that biological cost [of warming] looks like underwater.” 
  • TOO HOT FOR COFFEE: According to new analysis by Climate Central, countries where coffee beans are grown “are becoming too hot to cultivate them”, reported the Guardian. The world’s top five coffee-growing countries faced “57 additional days of coffee-harming heat” annually because of climate change, it added.

Spotlight

Nature talks inch forward

This week, Carbon Brief covers the latest round of negotiations under the UN Convention on Biological Diversity (CBD), which occurred in Rome over 16-19 February.

The penultimate set of biodiversity negotiations before October’s Conference of the Parties ended in Rome last week, leaving plenty of unfinished business.

The CBD’s subsidiary body on implementation (SBI) met in the Italian capital for four days to discuss a range of issues, including biodiversity finance and reviewing progress towards the nature targets agreed under the Kunming-Montreal Global Biodiversity Framework (GBF).

However, many of the major sticking points – particularly around finance – will have to wait until later this summer, leaving some observers worried about the capacity for delegates to get through a packed agenda at COP17.

The SBI, along with the subsidiary body on scientific, technical and technological advice (SBSTTA) will both meet in Nairobi, Kenya, later this summer for a final round of talks before COP17 kicks off in Yerevan, Armenia, on 19 October.

Money talks

Finance for nature has long been a sticking point at negotiations under the CBD.

Discussions on a new fund for biodiversity derailed biodiversity talks in Cali, Colombia, in autumn 2024, requiring resumed talks a few months later.

Despite this, finance was barely on the agenda at the SBI meetings in Rome. Delegates discussed three studies on the relationship between debt sustainability and implementation of nature plans, but the more substantive talks are set to take place at the next SBI meeting in Nairobi.

Several parties “highlighted concerns with the imbalance of work” on finance between these SBI talks and the next ones, reported Earth Negotiations Bulletin (ENB).

Lim Li Ching, senior researcher at Third World Network, noted that tensions around finance permeated every aspect of the talks. She told Carbon Brief:

“If you’re talking about the gender plan of action – if there’s little or no financial resources provided to actually put it into practice and implement it, then it’s [just] paper, right? Same with the reporting requirements and obligations.”

Monitoring and reporting

Closely linked to the issue of finance is the obligations of parties to report on their progress towards the goals and targets of the GBF.

Parties do so through the submission of national reports.

Several parties at the talks pointed to a lack of timely funding for driving delays in their reporting, according to ENB.

A note released by the CBD Secretariat in December said that no parties had submitted their national reports yet; by the time of the SBI meetings, only the EU had. It further noted that just 58 parties had submitted their national biodiversity plans, which were initially meant to be published by COP16, in October 2024.

Linda Krueger, director of biodiversity and infrastructure policy at the environmental not-for-profit Nature Conservancy, told Carbon Brief that despite the sparse submissions, parties are “very focused on the national report preparation”. She added:

“Everybody wants to be able to show that we’re on the path and that there still is a pathway to getting to 2030 that’s positive and largely in the right direction.”

Watch, read, listen

NET LOSS: Nigeria’s marine life is being “threatened” by “ghost gear” – nets and other fishing equipment discarded in the ocean – said Dialogue Earth.

COMEBACK CAUSALITY: A Vox long-read looked at whether Costa Rica’s “payments for ecosystem services” programme helped the country turn a corner on deforestation.

HOMEGROWN GOALS: A Straits Times podcast discussed whether import-dependent Singapore can afford to shelve its goal to produce 30% of its food locally by 2030.

‘RUSTING’ RIVERS: The Financial Times took a closer look at a “strange new force blighting the [Arctic] landscape”: rivers turning rust-orange due to global warming.

New science

  • Lakes in the Congo Basin’s peatlands are releasing carbon that is thousands of years old | Nature Geoscience
  • Natural non-forest ecosystems – such as grasslands and marshlands – were converted for agriculture at four times the rate of land with tree cover between 2005 and 2020 | Proceedings of the National Academy of Sciences
  • Around one-quarter of global tree-cover loss over 2001-22 was driven by cropland expansion, pastures and forest plantations for commodity production | Nature Food

In the diary

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 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate appeared first on Carbon Brief.

Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate

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Battery passport plan aims to clean up the industry powering clean energy

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For millions of consumers, the sustainability scheme stickers found on everything from bananas to chocolate bars and wooden furniture are a way to choose products that are greener and more ethical than some of the alternatives.

Inga Petersen, executive director of the Global Battery Alliance (GBA), is on a mission to create a similar scheme for one of the building blocks of the transition from fossil fuels to clean energy systems: batteries.

“Right now, it’s a race to the bottom for whoever makes the cheapest battery,” Petersen told Climate Home News in an interview.

The GBA is working with industry, international organisations, NGOs and governments to establish a sustainable and transparent battery value chain by 2030.

“One of the things we’re trying to do is to create a marketplace where products can compete on elements other than price,” Petersen said.

Under the GBA’s plan, digital product passports and traceability would be used to issue product-level sustainability certifications, similar to those commonplace in other sectors such as forestry, Petersen said.

Managing battery boom’s risks

Over the past decade, battery deployment has increased 20-fold, driven by record-breaking electric vehicle (EV) sales and a booming market for batteries to store intermittent renewable energy.

Falling prices have been instrumental to the rapid expansion of the battery market. But the breakneck pace of growth has exposed the potential environmental and social harms associated with unregulated battery production.

From South America to Zimbabwe and Indonesia, mineral extraction and refining has led to social conflict, environmental damage, human rights violations and deforestation. In Indonesia, the nickel industry is powered by coal while in Europe, production plants have been met with strong local opposition over pollution concerns.

“We cannot manage these risks if we don’t have transparency,” Petersen said.

    The GBA was established in 2017 in response to concerns about the battery industry’s impact as demand was forecast to boom and reports of child labour in the cobalt mines of the Democratic Republic of the Congo made headlines.

    The alliance’s initial 19 members recognised that the industry needed to scale rapidly but with “social, environmental and governance guardrails”, said Petersen, who previously worked with the UN Environment Programme to develop guiding principles to minimise the environmental impact of mining.

    A blonde woman wearing a head set sits with her legged crossed during an event at the World Economic Forum
    Inga Petersen, executive director of the Global Battery Alliance, speaking at a conference in Dalian, China, in June 2024 (Photo: World Economic Forum/Ciaran McCrickard) 

    Digital battery passport

    Today, the alliance is working to develop a global certification scheme that will recognise batteries that meet minimum thresholds across a set of environmental, social and governance benchmarks it has defined along the entire value chain.

    Participating mines, manufacturing plants and recycling facilities will have to provide data for their greenhouse gas emissions as well as how they perform against benchmarks for assessing biodiversity loss, pollution, child and forced labour, community impacts and respect for the rights of Indigenous peoples, for example.

    The data will be independently verified, scored, aggregated and recorded on a battery passport – a digital record of the battery’s composition, which will include the origin of its raw materials and its performance against the GBA’s sustainability benchmarks

    The scheme is due to launch in 2027.

    A carrot and a stick

    Since the start of the year, some of the world’s largest battery companies have been voluntarily participating in the biggest pilot of the scheme to date.

    More than 30 companies across the EV battery and stationary storage supply chains are involved, among them Chinese battery giants CATL and BYD subsidiary FinDreams Battery, miner Rio Tinto, battery producers Samsung SDI and Siemens, automotive supplier Denso and Tesla.

    Petersen said she was “thrilled” about support for the scheme. Amid a growing pushback against sustainability rules and standards, “these companies are stepping up to send a public signal that they are still committed to a sustainable and responsible battery value chain,” she said.

    A slide deck of the consortia and companies involved in the Global Battery Alliance pilot scheme
    The companies taking part in the Global Battery Alliance’s latest battery passport pilot scheme (Credit: Global Battery Alliance)

    There are other motivations for battery producers to know where components in their batteries have come from and whether they have been produced responsibly.

    In 2023, the EU adopted a law regulating the batteries sold on its market.

    From 2027, it mandates all batteries to meet environmental and safety criteria and to have a digital passport accessed via a QR code that contains information about the battery’s composition, its carbon footprint and its recycling content.

    The GBA certification is not intended as a compliance instrument for the EU law but it will “add a carrot” by recognising manufacturers that go beyond meeting the bloc’s rules on nature and human rights, Petersen said.

    Raising standards in complex supply chain

    But challenges remain, in part due to the complexity of battery supply chains.

    In the case of timber, “you have a single input material but then you have a very complex range of end products. For batteries, it’s almost the reverse,” Petersen said.

    The GBA wants its certification scheme to cover all critical minerals present in batteries, covering dozens of different mining, processing and manufacturing processes and hundreds of facilities.

    “One of the biggest impacts will be rewarding the leading performers through preferential access to capital, for example, with investors choosing companies that are managing their risk responsibly and transparently,” Petersen said.

      It could help influence public procurement and how companies, such as EV makers, choose their suppliers, she added. End consumers will also be able to access a summary of the GBA’s scores when deciding which product to buy.

      US, Europe rush to build battery supply chain

      Today, the GBA has more than 150 members across the battery value chain, including more than 50 companies, of which over a dozen are Chinese firms.

      China produces over three-quarters of batteries sold globally and it dominates the world’s battery recycling capacity, leaving the US and Europe scrambling to reduce their dependence on Beijing by building their own battery supply chains.

      Petersen hopes the alliance’s work can help build trust in the sector amid heightened geopolitical tensions. “People want to know where the materials are coming from and which actors are involved,” she said.

      At the same time, companies increasingly recognise that failing to manage sustainability risks can threaten their operations. Protests over environmental concerns have shut down mines and battery factories across the world.

       “Most companies know that and that’s why they’re making these efforts,” Petersen added.

      The post Battery passport plan aims to clean up the industry powering clean energy appeared first on Climate Home News.

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      Reheating plastic food containers: what science says about microplastics and chemicals in ready meals

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      How often do you eat takeaway food? What about pre-prepared ready meals? Or maybe just microwaving some leftovers you had in the fridge? In any of these cases, there’s a pretty good chance the container was made out of plastic. Considering that they can be an extremely affordable option, are there any potential downsides we need to be aware of? We decided to investigate.

      Scientific research increasingly shows that heating food in plastic packaging can release microplastics and plastic chemicals into the food we eat. A new Greenpeace International review of peer-reviewed studies finds that microwaving plastic food containers significantly increases this release, raising concerns about long-term human health impacts. This article summarises what the science says, what remains uncertain, and what needs to change.

      There’s no shortage of research showing how microplastics and nanoplastics have made their way throughout the environment, from snowy mountaintops and Arctic ice, into the beetles, slugs, snails and earthworms at the bottom of the food chain. It’s a similar story with humans, with microplastics found in blood, placenta, lungs, liver and plenty of other places. On top of this, there’s some 16,000 chemicals known to be either present or used in plastic, with a bit over a quarter of those chemicals already identified as being of concern. And there are already just under 1,400 chemicals that have been found in people.

      Not just food packaging, but plenty of household items either contain or are made from plastic, meaning they potentially could be a source of exposure as well. So if microplastics and chemicals are everywhere (including inside us), how are they getting there? Should we be concerned that a lot of our food is packaged in plastic?

      Ready meals, takeaway containers and plastic packaging can release microplastics and toxic chemicals into our food.

      Greenpeace analysis of 24 articles in peer-reviewed scientific journals found that the plastics we use to package our food are directly risking our health.

      Heating food in plastic packaging dramatically increases the levels of microplastics and chemicals that leach into our food.

      © Jack Taylor Gotch / Greenpeac

      Plastic food packaging: the good, the bad, and the ugly

      The growing trend towards ready meals, online shopping and restaurant delivery, and away from home-prepared meals and individual grocery shopping, is happening in every region of the world. Since the first microwaveable TV dinners were introduced in the US in the 1950s to sell off excess stock of turkey meat after Thanksgiving holidays, pre-packaged ready meals have grown hugely in sales. The global market is worth $190bn in 2025, and is expected to reach a total volume of 71.5 million tonnes by 2030. It’s also predicted that the top five global markets for convenience food (China, USA, Japan, Mexico and Russia) will remain relatively unchanged up to 2030, with the most revenue in 2019 generated by the North America region.

      A new report from Greenpeace International set out to analyse articles in peer-reviewed, scientific journals to look at what exactly the research has to say about plastic food packaging and food contact plastics.

      Here’s what we found.

      Our review of 24 recent articles highlights a consistent picture that regulators, businesses and

      consumers should be concerned about: when food is packaged in plastic and then microwaved, this significantly increases the risk of both microplastic and chemical release, and that these microplastics and chemicals will leach into the food inside the packaging.

      And not just some, but a lot of microplastics and chemicals.

      When polystyrene and polypropylene containers filled with water were microwaved after being stored in the fridge or freezer, one study found they released anywhere between 100,000-260,000 microplastic particles, and another found that five minutes of microwave heating could release between 326,000-534,000 particles into food.

      Similarly there are a wide range of chemicals that can be and are released when plastic is heated. Across different plastic types, there are estimated to be around 16,000 different chemicals that can either be used or present in plastics, and of these around 4,200 are identified as being hazardous, whilst many others lack any form of identification (hazardous or otherwise) at all.

      The research also showed that 1,396 food contact plastic chemicals have been found in humans, several of which are known to be hazardous to human health. At the same time, there are many chemicals for which no research into the long-term effects on human health exists.

      Ultimately, we are left with evidence pointing towards increased release of microplastics and plastic chemicals into food from heating, the regular migration of microplastics and chemicals into food, and concerns around what long-term impacts these substances have on human health, which range from uncertain to identified harm.

      Illustrated diagram showing how heating food in plastic containers releases microplastics, nanoplastics and chemicals into food. The graphic lists common plastic types used in food containers, including PET, HDPE, PVC, LDPE, PP, PS and other plastics. It shows food being heated in ovens and microwaves in containers labelled “oven safe” and “microwave safe”. Arrows lead from heated food to a cutaway of a plastic container filled with coloured particles, representing microplastics, nanoplastics and chemical additives migrating from the plastic into food.
      Heating food in plastic containers, even those labelled “microwave safe” or “oven safe”, can release microplastics, nanoplastics and toxic chemicals into our meals. From ready meals to leftovers, common plastics like PET, PP and PS break down under heat, contaminating food we eat every day. This visual explains how plastic packaging turns heat into hidden exposure. © William Morris-Julien / Greenpeace 

      The known unknowns of plastic chemicals and microplastics

      The problem here (aside from the fact that plastic chemicals are routinely migrating into our food), is that often we don’t have any clear research or information on what long-term impacts these chemicals have on human health. This is true of both the chemicals deliberately used in plastic production (some of which are absolutely toxic, like antimony which is used to make PET plastic), as well as in what’s called non-intentionally added substances (NIAS).

      NIAS refers to chemicals which have been found in plastic, and typically originate as impurities, reaction by-products, or can even form later when meals are heated. One study found that a UV stabiliser plastic additive reacted with potato starch when microwaved to create a previously unknown chemical compound.

      We’ve been here before: lessons from tobacco, asbestos and lead

      Although none of this sounds particularly great, this is not without precedence. Between what we do and don’t know, waiting for perfect evidence is costly both economically and in terms of human health. With tobacco, asbestos, and lead, a similar story to what we’re seeing now has played out before. After initial evidence suggesting problems and toxicity, lobbyists from these industries pushed back to sow doubt about the scientific validity of the findings, delaying meaningful action. And all the while, between 1950-2000, tobacco alone led to the deaths of around 60 million people. Whilst distinguishing between correlation and causation, and finding proper evidence is certainly important, it’s also important to take preventative action early, rather than wait for more people to be hurt in order to definitively prove the point.

      Where to from here?

      This is where adopting the precautionary principle comes in. This means shifting the burden of proof away from consumers and everyone else to prove that a product is definitely harmful (e.g. it’s definitely this particular plastic that caused this particular problem), and onto the manufacturer to prove that their product is definitely safe. This is not a new idea, and plenty of examples of this exist already, such as the EU’s REACH regulation, which is centred around the idea of “no data, no market” – manufacturers are obligated to provide data demonstrating the safety of their product in order to be sold.

      Ready meals, takeaway containers and plastic packaging can release microplastics and toxic chemicals into our food.

      Greenpeace analysis of 24 articles in peer-reviewed scientific journals found that the plastics we use to package our food are directly risking our health.

      Heating food in plastic packaging dramatically increases the levels of microplastics and chemicals that leach into our food.

      © Jack Taylor Gotch / Greenpeac

      But as it stands currently, the precautionary principle isn’t applied to plastics. For REACH in particular, plastics are assessed on a risk-based approach, which means that, as the plastic industry itself has pointed out, something can be identified as being extremely hazardous, but is still allowed to be used in production if the leached chemical stays below “safe” levels, despite that for some chemicals a “safe” low dose is either undefined, unknown, or doesn’t exist.

      A better path forward

      Governments aren’t acting fast enough to reduce our exposure and protect our health. There’s no shortage of things we can do to improve this situation. The most critical one is to make and consume less plastic. This is a global problem that requires a strong Global Plastics Treaty that reduces global plastic production by at least 75% by 2040 and eliminates harmful plastics and chemicals. And it’s time that corporations take this growing threat to their customers’ health seriously, starting with their food packaging and food contact products. Here are a number of specific actions policymakers and companies can take, and helpful hints for consumers.

      Policymakers & companies

      • Implement the precautionary principle:
        • For policymakers – Stop the use of hazardous plastics and chemicals, on the basis of their intrinsic risk, rather than an assessment of “safe” levels of exposure.
        • For companies – Commit to ensure that there is a “zero release” of microplastics and hazardous chemicals from packaging into food, alongside an Action Plan with milestones to achieve this by 2035
      • Stop giving false assurances to consumers about “microwave safe” containers
      • Stop the use of single-use and plastic packaging, and implement policies and incentives to foster the uptake of reuse systems and non-toxic packaging alternatives.

      Consumers

      • Encourage your local supermarkets and shops to shift away from plastic where possible
      • Avoid using plastic containers when heating/reheating food
      • Use non-plastic refill containers

      Trying to dodge plastic can be exhausting. If you’re feeling overwhelmed, you’re not alone. We can only do so much in this broken plastic-obsessed system. Plastic producers and polluters need to be held accountable, and governments need to act faster to protect the health of people and the planet. We urgently need global governments to accelerate a justice-centred transition to a healthier, reuse-based, zero-waste future. Ensure your government doesn’t waste this once-in-a-generation opportunity to end the age of plastic.

      Reheating plastic food containers: what science says about microplastics and chemicals in ready meals

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