Journalists covering a major climate report in 2022 broke with a “historical tradition” of focusing on the negative impacts of climate change, shifting instead to “positive, solutions-based reporting”, a study has found.
The research, published in Climatic Change, looks at the way US and UK news outlets covered the Intergovernmental Panel on Climate Change’s (IPCC) 2022 report on the mitigation of climate change.
The findings “strongly suggest a shift in emphasis” to climate solutions in climate-change reporting, the authors say.
They note that previous IPCC reports “did not receive such an overwhelmingly positive, and at times even optimistic, message”.
However, the response to the report was significantly less optimistic on social media, where popular posts were more likely to focus on a “sense of hopelessness” and the “dire” nature of the climate threat, the authors say.
The findings contribute to the growing literature on the changing nature of media coverage as climate impacts become more frequent and severe, and groups opposed to climate action shift tactics.
Priority messages
The research looks at the media response to the report published in April 2022 by the IPCC’s Working Group III (WG3), as part of the influential body’s sixth assessment report cycle (AR6). (See Carbon Brief’s in-depth coverage.)
The report provides an overview of the world’s progress on tackling greenhouse emissions, while also examining the different sources of emissions. It is one of three comprehensive scientific assessments published each five-to-seven year IPCC assessment cycle, alongside reports on the physical science basis for climate change and its impacts.
To assess the media’s response to the WG3 report, the researchers identify 12 “official priority messages” promoted by the IPCC around its launch.
These are based on the news release, the press conference, headline statements in the report’s summary for policymakers section, and social-media posts sent out by the IPCC’s communication team.
The table below sets out the IPCC’s key messages, as identified by the researchers, ranging from the headline “there are options available now in all sectors” to more specific messages around the need to decarbonise buildings and industry, and ramp up finance to developing countries.
The researchers then assess the presence (mentions) and dominance (inclusion in headline, top five sentences, or as a strong narrative throughout) of these “key messages” in 66 articles published over 4-6 April on more than 20 popular UK and US news websites.
They also look at how the 12 main messages aligned with 56 of the most popular social media posts about the report on Facebook and Twitter.
A small sample
The study’s media sample focuses on articles published by the top 12 most popular online news sites in the UK and US, as identified by Reuters Institute’s 2021 digital news report, with a few exceptions.
The sample features left-leaning publications, such as the Guardian and the New York Times, centre-right outlets, including the Times and the Financial Times, and right-leaning titles, such as the Daily Mail and the Wall Street Journal.
Regional newspapers and local television websites were missed due to a lack of coverage of the report.
The authors say they chose to focus on news media in the UK and US because the two countries are host to “legacy media organisations” that have a “strong worldwide presence in English (particularly online), host sceptical voices and are influential amongst policymakers outside of their home countries”.
The social-media sample includes posts by authors, news organisations, scientists, journalists and pro- and anti-climate action groups.
Dr James Painter – an author of the study and research associate at the University of Oxford’s Reuters Institute for the Study of Journalism – tells Carbon Brief the sample size was relatively small largely due to a muted media response to the report. He adds:
“Sixty six [articles] isn’t a huge sample compared to other studies, but it is big enough to be robust and broad enough in terms of a spectrum of types of media outlets and political leaning.”
Solutions-focused coverage
The study notes that coverage “seldom deviated from the main messages the IPCC was promoting”.
The three most mentioned messages are:
- “There are options available to reduce greenhouse gas emissions” (70%)
- “Major transformations in the energy sector are needed into renewables” (67%)
- “A substantial reduction in fossil fuels is needed” (63%)
A majority of articles (54%) also mention the IPCC’s recommendation that carbon dioxide removal (CDR) solutions are necessary to bring down emissions.
The bar chart below shows the percentage of UK and US media coverage that included the IPCC’s key messages, with UK media represented in dark blue and US media in light blue.
The authors say the paper provides a “detailed case study of which solutions get the most traction – and most critiques – in the media coverage of a policy event”.
For example, it notes how the least-mentioned solutions were sectoral measures focused on reducing the climate impact of industry, cities and buildings, and ramping up finance to poorer nations.
Painter says he believes the downgrading of these particular messages was a product of the space constraints of online journalism, which led journalists to prioritise “key findings” and “controversial” topics, such as CDR.
Break from the past
The research acknowledges that solutions-focused media coverage of the WG3 report is “to be expected”, given the document’s focus on climate mitigation options.
However, the researchers note that media coverage of the previous iteration of the WG3 report – published in 2014 – did not focus on solutions.
They point to a 2015 study that found the dominant frames of coverage were “settled science” and “political and ideological struggle”.
They also highlight analysis published in 2016 that finds a “low presence of the opportunity of action frame compared to disaster and uncertainty framing” in the response to all three key reports of the fifth IPCC assessment cycle.
As a result, the study authors argue the news media’s focus on solutions in reporting of the latest WG3 report “confirms a trend to more solutions coverage” observed by other researchers.
The research also notes the response to the 2022 WG3 report “to a large extent may have been prompted by the IPCC’s communication approach”.
However, Sigourney Luz, digital media and communications manager at Imperial College London and communications manager for the WG3 report, tells Carbon Brief that this is “difficult to determine”.
This shift could also be down to the nature of the report or “part of a broader trend in climate reporting”, she says, adding that “both media coverage of climate change and the scope of IPCC reports have evolved” between 2014 and 2022.
Dr Jill E Hopke, an associate professor of journalism at DePaul University, who was not involved in the study, says it is “encouraging” to see traditional media reflect the IPCC’s priorities. However, she adds that reporting of solutions remains scarce in reporting on climate impacts:
“The link is missing in that type of coverage, which is discouraging. As audiences and as people living on this planet, when we see extreme weather events driven by climate change, it is important to have media coverage that talks about the solutions relative, or links those things together.”
Dr Antal Wozniak, senior lecturer in media, politics and society at the University of Liverpool, who was also not involved in the study, adds that his research suggests that “solutions coverage now is actually shifting more towards adaptation [as opposed to mitigation], especially when you leave the politics beat”.
The pair are working on a number of studies which look at the media’s response to climate impacts, from heatwaves to soil degradation.
Social media
While traditional media narratives about the WG3 report largely dovetailed with the solutions-orientated messages promoted by the IPCC, social media posts did not.
The study finds that 60% of the social-media posts contained themes that did not reiterate any of the IPCC’s “official” or “unofficial” messages. Around half made no mention of solutions at all.
(On top of the 12 “official” IPCC messages, the researchers also looked at dominance and prevalence of three “unofficial messages” promoted by the IPCC and UN secretary general Antonio Guterres around the report launch – for instance, a warning that it was “now or never”.)
Instead, social-media posts focused on the “dire nature of the climate threat, the need for urgent action and a sense of hopelessness”, the study notes.
Painter says “strong” divergence between social media and news media responses holds implications for efforts to build momentum behind climate action:
“If there is an increasingly fractured debate where there isn’t consensus about responses to the climate challenge, then that is important. How do you build a sort of multi-sectoral alliance to do something about climate change if that is the case?”
Equity and justice
The study notes that the concepts of equity and justice “do not seem to have been given priority” by IPCC messaging, beyond a recommendation for more finance to go to poorer nations.
The message around financial flows was among the least covered by news media: it was the third-least prevalent message in mainstream media, and the fifth least dominant.
However, the research says that journalists highlighted issues of equity and justice that were not explicitly promoted by the IPCC. For example, it finds that 22% and 14% of articles, respectively, included messaging that either richer nations or wealthier individuals “should do more”.
The study also notes discussions of equity were “lacking” on social media, with just one social-media post – from Carbon Brief’s Simon Evans – focusing on the unequal distribution of greenhouse gas emissions within and between nations.
Climate obstructionism
Another notable finding of the media analysis was the absence of a response to WG3 from what the report authors dub the “organised climate counter-movement”.
This was contrary to expectations that the analysis might confirm a trend of changing tactics of climate-sceptic groups away from outright climate denial and towards questioning climate solutions.
In fact, the paper notes that the most common source cited in critiques of climate solutions in articles was the IPCC itself.
CDR technology was the most critiqued solution, with more than a third (35%) of articles raising some form of concern.
The authors note that the UK news media was “noticeably more critical of CDR and land-based solutions than the US sample”. The US media, on the other hand, was more critical of messaging around “options being available” and the need to phase out fossil fuels.
Overall, the study finds that the IPCC was the source for 57% of all critiques of solutions in the media studied, followed by the article authors themselves (23%), IPCC-affiliated and other scientists (15%), and pro-climate action campaign groups (5%).
In contrast, the research finds “only very limited presence of organised or individual scepticism on social media” and “no presence of evidence scepticism…nor any presence of organised scepticism or individual scepticism” in articles.
The researchers argue the relative lack of a response from sceptics could be a result of the study’s small sample size and a lack of specific country-level policy recommendations for groups to critique.
Dr Max Boykoff, a professor in the University of Colorado Boulder’s environmental studies department, who was not involved in the study, says the findings chime with his research into the evolving strategies of the Heartland Institute, which found the influential US conservative thinktank was increasingly preoccupied with opposing climate action at a state-level. He tells Carbon Brief:
“There was less of a focus on the international and national scene, and more of a focus on state level, local level engagements. In baseball lingo…it’s thinking about ‘small ball’, instead of trying to hit a home run.”
Boykoff adds that the study forms “part of a larger set of efforts that take place across research communities that add value to how we understand how the world is changing around us and what we can do to influence positive change”.
The post Media response to 2022 IPCC report suggests shift to ‘solutions-based reporting’ appeared first on Carbon Brief.
Media response to 2022 IPCC report suggests shift to ‘solutions-based reporting’
Climate Change
Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
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
- 2-6 March: UN Food and Agriculture Organization regional conference for Latin America and Caribbean | Brasília
- 5 March: Nepal general elections
- 9-20 March: First part of the thirty-first session of the International Seabed Authority (ISA) | Kingston, Jamaica
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
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.
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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.
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.
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.
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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.
Battery passport plan aims to clean up the industry powering clean energy
Climate Change
Reheating plastic food containers: what science says about microplastics and chemicals in ready meals
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?
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.
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.
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.
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.
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.
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Cropped 25 February 2026: Food inflation strikes | El Niño looms | Biodiversity talks stagnate
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