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.
This is an online version of Carbon Brief’s fortnightly Cropped email newsletter. Subscribe for free here.
Key developments
The road to COP28
PROGRESS ON PLEDGES: Climate Home News examined the progress towards the climate pledges made at COP26 in Glasgow two years ago. Nearly 50 additional countries have signed a pledge to reduce their methane emissions by 30% by 2030, bringing the total to 150 countries. However, these countries only constitute half of global methane emissions and “under current trajectories, total human-made methane emissions could rise by up to 13%” over 2020-30. Another major pledge in Glasgow was the forest pledge to halt and reverse deforestation by 2030, signed by more than 140 countries. Countries “remain off track to reach the goal of the Glasgow pledge”, Climate Home News wrote. In 2022, tree loss was 21% higher than the required level to achieve zero deforestation in seven years, according to an assessment carried out by several non-governmental organisations.
DECARBONISING FOOD: Ahead of COP28, the Global Alliance for the Future of Food and Dalberg Advisors, a global consultancy focused on sustainability, published two reports looking at the links between food systems and fossil fuels. The Alliance called on stakeholders from the food and energy industries to collaborate to break the bond between the food sector and fossil fuels and transform the food sector to a more sustainable one that is in line with the Paris Agreement. One of the reports laid out the relationships between food and energy systems and provided recommendations to decarbonise the food sector. For example, it said, food producers could start reducing their use of fossil-fuel-based agrochemicals and move to agroecological and regenerative systems.
FOOD FOCUS: A group of more than 80 organisations and individuals, including Unilever, WWF and Columbia Climate School, issued a joint open letter addressed to the UN Framework Convention on Climate Change to demand that food systems be at the centre of negotiations at COP28, reported the UK trade publication Food Manufacture. The organisations pointed out that joint action is required to solve climate change, biodiversity loss and food insecurity. The signatories also asked that National Adaptation Plans and Nationally Determined Contributions include food systems. The letter argued that doing so will encourage countries to create national policies to reduce food waste and move to more sustainable and healthy diets.
Hidden costs of food systems
HIDDEN FIGURES: The UN Food and Agriculture Organization (FAO) found that the “hidden costs” of food systems amount to “at least” $10tn per year, or nearly 10% of total global GDP. The latest edition of its annual State of Food and Agriculture report focused on “true-cost accounting” – tallying up the environmental, health and social costs and benefits of the world’s food systems. According to the FAO, unsustainable food systems are contributing to “climate change, natural resource degradation and the unaffordability of healthy diets”. Based on an assessment of more than 150 countries’ food systems, the report found “that low-income countries bear the highest burden of the hidden costs of agrifood systems relative to national income” – up to one-quarter of their GDP, as compared to just 12% for middle-income countries and less than 8% for high-income countries.
ENVIRONMENTAL UNDERESTIMATE: Of the total sum, more than 70% of the hidden costs are “driven by unhealthy diets”, leading to “non-communicable diseases and causing labour productivity losses”, the FAO wrote in a press release, adding that the costs of these health impacts primarily affected higher-income countries. About 20% of the costs are environmental: greenhouse gas emissions, nitrogen emissions, land-use change and water use. The press release noted that the scale of environmental costs “is probably underestimated due to data limitations”. FAO director-general Qu Dongyu said: “The future of our agrifood systems hinges on our willingness to appreciate all food producers, big or small, to acknowledge these true costs and understand how we all contribute to them and what actions we need to take.” Governments should factor in these true costs “to transform agrifood systems”, the FAO added. Next year’s report will also focus on true-cost accounting, the FAO said.
INTERCONNECTED COSTS: Dr David Laborde, head of agrifood economics at the FAO, told Wired: “With this report, we can put a price tag on these problems [facing our agrifood systems].” Wired wrote that “hidden costs can be interconnected”, using the example of cacao – where farmers in low-income countries “are often paid a pittance for their crops”, while over-consumption of chocolate in higher-income countries can lead to negative health outcomes there. Jack Bobo, the director of the Food Systems Institute at the University of Nottingham, told Wired that the cross-border calculations required for true-cost accounting “can get fiendishly complicated”. Bobo said: “If you export your environmental footprint to the most biodiverse countries on the planet, you may not have a more sustainable system…There’s not one perfect system.”
DRC controversy
OIL AND GAS BLOCKS: A company chosen by the Democratic Republic of the Congo for a “technically complex project” to extract gas from Lake Kivu, a large lake located on the DRC-Rwanda border, did not meet the financial criteria in its proposal, an investigation by the Bureau of Investigative Journalism (TBIJ) and Reuters found. Alfajiri Energy, a Canadian start-up, was selected last month to extract methane from Lake Kivu – described as a “killer lake” due to its risk of a toxic, deadly eruption. The DRC’s decision to auction off land for oil and gas exploration, announced last year, has been “plagued with apparent preferential treatment and backroom deals”, TBIJ said.
BIDDING WARS: A 2022 report seen by Reuters and TBIJ said that Alfajiri Energy “lacked vital information, such as a work plan or feasibility study” and scored lowest out of three companies applying for the contract. The same experts involved in this report later made a “remarkable U-turn” in a second report, which “reposition[ed] Alfajiri as the highest-scoring bidder”, TBIJ said. Reuters noted: “The auction, which took place last year, was the first of its kind to be conducted in [the DRC] under a law from 2015 that was designed to promote transparency in the oil and gas sector.”
RESPONSE: Reuters said that the DRC’s hydrocarbons minister, Didier Budimbu, denied any problems with the tender process, adding in a text message: “The process was very transparent and it will remain so. I will make sure of it.” He told TBIJ that he maintains transparent relations with all potential investors in the tendering process, reassuring them that the DRC is “now the destination for those who want to seize the opportunity to do business”. Reuters said the DRC president’s office declined to comment. Alfajiri’s founder and chief executive, Christian Hamuli, called the process “rigorous, transparent and credible”, Reuters said. Hamuli told TBIJ that Alfajiri has “highly qualified and experienced professionals with integrity” who are capable of developing the Lake Kivu project in a secure manner.
THREE BASINS: Elsewhere in Central Africa, tropical forest countries from across three continents agreed to work together to finance and protect their ecosystems, but failed to firm up a unified alliance at a summit in the Republic of the Congo late last month. Carbon Brief reported the key outcomes of the Three Basins Summit, which were described as ”underwhelming” by one observer. The final declaration, agreed between countries located in the tropical forest basins of the Amazon, the Congo and the Borneo-Mekong, “fails to commit to any concrete actions for the protection and restoration of nature”, according to a statement by Greenpeace. But an observer told Carbon Brief it might “inform policies and strategies at COP28”.
News and views
NO OLIVE BRANCH: Some 40,000 olive trees and hundreds of square kilometres of land have been burned in southern Lebanon in “fires caused by Israeli shelling” since last month, Reuters reported. More than 130 fires have been recorded by the agricultural ministry. The olive harvest has not happened yet, meaning that farmers are losing this year’s harvest in addition to the trees themselves. More than 110,000 farmers and growers in Lebanon rely on olive trees for their income, Reuters added. Lebanon’s agricultural minister, Abbas Hajj Hassan, told the newswire: “People are connected to olives spiritually. Our ancestors planted them, and we are losing them today.”
AGREEMENT ON ICE: An international meeting in Tasmania “failed to agree on new conservation areas” for the fragile Antarctic marine environment, the Guardian wrote. The meeting, comprising 26 national governments and the EU, “hear[d] evidence the southern continent is facing a range of crises”, but the Russian delegation “opposed proposals to boost environmental protection”, the newspaper explained. Further debate on the three proposed protected areas has been pushed to next year as a result. The executive director of the Antarctic and Southern Ocean Coalition, Claire Christian, said: “It feels like we are taking one step forward and two steps back on Antarctic marine protection.”
KENYA OFFSETS: Kenya has signed a deal with Blue Carbon, a UAE-based company, that would “concede ‘millions of hectares’ of its territory for the production of carbon credits”, the Middle East Eye reported. This follows a “slew” of similar deals with Liberia, Tanzania, Zambia and Zimbabwe, the news site said. Elsewhere, the Guardian reported on allegations of sexual harassment at a leading carbon-offsetting project in southern Kenya, which is used by companies such as Netflix and Shell. A report from two NGOs alleged “extensive sexual abuse, harassment and exploitation between 2011 and 2023” by senior male employees of Wildlife Works, a California-based firm operating the Kasigau Corridor conservation project. In a statement, Wildlife Works’ president, Mike Korchinsky, said the company suspended three people after it became aware of the allegations in August.
BLOW TO FARMERS: Extreme weather events, such as floods, heavy rainfall and hailstorms, have made Italy fall to second place in worldwide wine production, wrote Fortune, with France now in first place. Overall, European wine production fell 5.5% compared with the average production from the last five years, according to the European farming lobby Copa-Cogeca. Meanwhile, in the UK, farmers have warned that potato and cereal crops might be affected by the recent floods caused by Storm Babet in October, reported the Guardian. The newspaper added that farmers’ crops were rotting due to the floods, driving the National Farmers’ Union to call on the government to implement a water strategy to prevent damages.
LATIN AMERICAN DROUGHT: The state of Pará, in northern Brazil, suffered an “unusually fierce dry season” caused by the combination of large-scale cattle farming, climate change and weather events such as El Niño, the Guardian reported. The publication wrote that palm trees “have started to shrivel up and turn brown”, rivers and aquifers are drying, the odour of smoke permeates the air and land-grabbers “are taking advantage of the tinder-dry conditions”. In the state of the Amazonas, also in Brazil, more than 3,000 forest fires were registered over 1-23 October, which has increased the number of respiratory problems, reported Mongabay. At the same time, it is expected that a “severe drought” will reduce daily ship crossings of the Panama Canal and increase shipping costs, according to MercoPress.
DUBIOUS DECLARATION: A new Unearthed investigation found that large EU agribusiness groups are using a “pro-meat manifesto” to lobby senior EU politicians. The “Dublin Declaration” – signed by more than 1,000 scientists and used by trade groups to oppose green policies – was “written, released and promoted by agribusiness consultants”, freedom of information requests revealed. Prof Erik Mathijs told Unearthed the declaration “is actually fairly uncontroversial” in asking that the “social, historical and cultural value” of animal food products be recognised. New York University’s Dr Matthew Hayek told the outlet the declaration was a “hugely misleading endeavour” that “fosters confusion and doubt when there should be none”. The declaration’s organising committee denied that their ties to private organisations was affecting their scientific objectivity.
Watch, read, listen
BANKING ON SEEDS: Indigenous peoples in Brazil are preserving the country’s biodiversity through a seed bank, Amanda Magnani wrote for Latin America News Dispatch.
‘DAUNTING TASK’: Marine geographer Dr Dawn Wright told NPR’s Short Wave about her experience exploring the seafloor and its importance for human life.
ENERGY VS ENVIRONMENT: In Cambodia, renewable energy projects are sparking debate over their impacts on local biodiversity, Anton Delgado said in the Japan Times.
INSECT REVOLUTION: A podcast from Table addressed the opportunities for expanding insect consumption in Europe and its potential to reduce land and water use.
New science
Adaptation of sea turtles to climate warming: Will phenological responses be sufficient to counteract changes in reproductive output?
Global Change Biology
According to a new study, changes in nesting behaviours will not be sufficient to offset the impacts of changing temperatures on sea turtles at a majority of nesting sites. Researchers modelled sea turtle hatching using both historical and projected air and sea temperatures under a moderate warming scenario, then assessed how nesting earlier or later in the year would improve hatching success and influence the sex ratio of the hatchlings. They found that although some turtles could maintain their current nesting temperatures, success rates and sex ratios by shifting their nesting timing, for half of the sites, no such shift would be able to maintain current temperatures. They conclude: “Turtles may need to use other adaptive responses and/or there is the need to enhance sea turtle resilience to climate warming.”
Climate change exacerbates nutrient disparities from seafood
Nature Climate Change
The availability of nutrients, such as iron and zinc, is expected to decline in seafood by around 30% by the end of the century in low-income countries under 4C of warming, a new study found. The researchers combined fisheries databases and predictive models to analyse nutrients from fisheries and aquaculture in the past and to project future paths under climate change. They found that climate change, for example, has driven changes in species distributions and productivity and modified catch composition, changing the nutrients people consume. The researchers highlighted the importance of seafood for physical and mental development and suggested securing “effective mitigation to support nutritional security of vulnerable nations and global health equity”.
Integrating climate adaptation and transboundary management: Guidelines for designing climate-smart marine protected areas
One Earth
New research found that future climate change, including marine heatwaves, could diminish ecological connectivity – the ability of organisms to move freely – in marine protected areas (MPAs) by 50% and hinder the recovery of vulnerable species to those changes. The researchers mapped and analysed areas of the coastal Pacific Ocean near California that met proposed MPA guidelines, then quantified the connectivity of fish and invertebrate larvae. The authors provided 21 guidelines for designing marine reserve networks, including incorporating connectivity, allowing time for recovery and adapting to climate change. They concluded that expanding marine protected areas coverage – particularly critical areas for connectivity and climate refugia – is crucial to enhancing the climate resilience of the ocean.
In the diary
- 9-10 November: CBD International dialogue with Indigenous peoples and local communities on the implementation of the Kunming-Montreal Global Biodiversity Framework and its Gender Plan of Action | Geneva, Switzerland
- 13-17 November: UNCCD 21st session of the committee for the review of the implementation of the UN Convention to Combat Desertification | Samarkand, Uzbekistan
- 13-17 November: 59th session of the of the International Tropical Timber Council | Pattaya, Thailand
- 13-17 November: UNFCCC Asia-Pacific Climate Week | Jahor, Malaysia
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 8 November 2023: ‘Hidden costs’ of food; Gas auction controversy; Looking towards COP28 appeared first on Carbon Brief.
Cropped 8 November 2023: ‘Hidden costs’ of food; Gas auction controversy; Looking towards COP28
Climate Change
Pacific nations want higher emissions charges if shipping talks reopen
Seven Pacific island nations say they will demand heftier levies on global shipping emissions if opponents of a green deal for the industry succeed in reopening negotiations on the stalled accord.
The United States and Saudi Arabia persuaded countries not to grant final approval to the International Maritime Organization’s Net-Zero Framework (NZF) in October and they are now leading a drive for changes to the deal.
In a joint submission seen by Climate Home News, the seven climate-vulnerable Pacific countries said the framework was already a “fragile compromise”, and vowed to push for a universal levy on all ship emissions, as well as higher fees . The deal currently stipulates that fees will be charged when a vessel’s emissions exceed a certain level.
“For many countries, the NZF represents the absolute limit of what they can accept,” said the unpublished submission by Fiji, Kiribati, Vanuatu, Nauru, Palau, Tuvalu and the Solomon Islands.
The countries said a universal levy and higher charges on shipping would raise more funds to enable a “just and equitable transition leaving no country behind”. They added, however, that “despite its many shortcomings”, the framework should be adopted later this year.
US allies want exemption for ‘transition fuels’
The previous attempt to adopt the framework failed after governments narrowly voted to postpone it by a year. Ahead of the vote, the US threatened governments and their officials with sanctions, tariffs and visa restrictions – and President Donald Trump called the framework a “Green New Scam Tax on Shipping”.
Since then, Liberia – an African nation with a major low-tax shipping registry headquartered in the US state of Virginia – has proposed a new measure under which, rather than staying fixed under the NZF, ships’ emissions intensity targets change depending on “demonstrated uptake” of both “low-carbon and zero-carbon fuels”.
The proposal places stringent conditions on what fuels are taken into consideration when setting these targets, stressing that the low- and zero-carbon fuels should be “scalable”, not cost more than 15% more than standard marine fuels and should be available at “sufficient ports worldwide”.
This proposal would not “penalise transitional fuels” like natural gas and biofuels, they said. In the last decade, the US has built a host of large liquefied natural gas (LNG) export terminals, which the Trump administration is lobbying other countries to purchase from.
The draft motion, seen by Climate Home News, was co-sponsored by US ally Argentina and also by Panama, a shipping hub whose canal the US has threatened to annex. Both countries voted with the US to postpone the last vote on adopting the framework.
The IMO’s Panamanian head Arsenio Dominguez told reporters in January that changes to the framework were now possible.
“It is clear from what happened last year that we need to look into the concerns that have been expressed [and] … make sure that they are somehow addressed within the framework,” he said.
Patchwork of levies
While the European Union pushed firmly for the framework’s adoption, two of its shipping-reliant member states – Greece and Cyprus – abstained in October’s vote.
After a meeting between the Greek shipping minister and Saudi Arabia’s energy minister in January, Greece said a “common position” united Greece, Saudi Arabia and the US on the framework.
If the NZF or a similar instrument is not adopted, the IMO has warned that there will be a patchwork of differing regional levies on pollution – like the EU’s emissions trading system for ships visiting its ports – which will be complicated and expensive to comply with.
This would mean that only countries with their own levies and with lots of ships visiting their ports would raise funds, making it harder for other nations to fund green investments in their ports, seafarers and shipping companies. In contrast, under the NZF, revenues would be disbursed by the IMO to all nations based on set criteria.
Anais Rios, shipping policy officer from green campaign group Seas At Risk, told Climate Home News the proposal by the Pacific nations for a levy on all shipping emissions – not just those above a certain threshold – was “the most credible way to meet the IMO’s climate goals”.
“With geopolitics reframing climate policy, asking the IMO to reopen the discussion on the universal levy is the only way to decarbonise shipping whilst bringing revenue to manage impacts fairly,” Rios said.
“It is […] far stronger than the Net-Zero Framework that is currently on offer.”
The post Pacific nations want higher emissions charges if shipping talks reopen appeared first on Climate Home News.
Pacific nations want higher emissions charges if shipping talks reopen
Climate Change
Doubts over European SAF rules threaten cleaner aviation hopes, investors warn
Doubts over whether governments will maintain ambitious targets on boosting the use of sustainable aviation fuel (SAF) are a threat to the industry’s growth and play into the hands of fossil fuel companies, investors warned this week.
Several executives from airlines and oil firms have forecast recently that SAF requirements in the European Union, United Kingdom and elsewhere will be eased or scrapped altogether, potentially upending the aviation industry’s main policy to shrink air travel’s growing carbon footprint.
Such speculation poses a “fundamental threat” to the SAF industry, which mainly produces an alternative to traditional kerosene jet fuel using organic feedstocks such as used cooking oil (UCO), Thomas Engelmann, head of energy transition at German investment manager KGAL, told the Sustainable Aviation Fuel Investor conference in London.
He said fossil fuel firms would be the only winners from questions about compulsory SAF blending requirements.
The EU and the UK introduced the world’s first SAF mandates in January 2025, requiring fuel suppliers to blend at least 2% SAF with fossil fuel kerosene. The blending requirement will gradually increase to reach 32% in the EU and 22% in the UK by 2040.
Another case of diluted green rules?
Speaking at the World Economic Forum in Davos in January, CEO of French oil and gas company TotalEnergies Patrick Pouyanné said he would bet “that what happened to the car regulation will happen to the SAF regulation in Europe”.
The EU watered down green rules for car-makers in March 2025 after lobbying from car companies, Germany and Italy.
“You will see. Today all the airline companies are fighting [against the EU’s 2030 SAF target of 6%],” Pouyanne said, even though it’s “easy to reach to be honest”.
While most European airline lobbies publicly support the mandates, Ryanair Group CEO Michael O’Leary said last year that the SAF is “nonsense” and is “gradually dying a death, which is what it deserves to do”.
EU and UK stand by SAF targets
But the EU and the British government have disputed that. EU transport commissioner Apostolos Tzitzikostas said in November that the EU’s targets are “stable”, warning that “investment decisions and construction must start by 2027, or we will miss the 2030 targets”.
UK aviation minister Keir Mather told this week’s investor event that meeting the country’s SAF blending requirement of 10% by 2030 was “ambitious but, with the right investment, the right innovation and the right outlook, it is absolutely within our reach”.
“We need to go further and we need to go faster,” Mather said.

SAF investors and developers said such certainty on SAF mandates from policymakers was key to drawing the necessary investment to ramp up production of the greener fuel, which needs to scale up in order to bring down high production costs. Currently, SAF is between two and seven times more expensive than traditional jet fuel.
Urbano Perez, global clean molecules lead at Spanish bank Santander, said banks will not invest if there is a perceived regulatory risk.
David Scott, chair of Australian SAF producer Jet Zero Australia, said developing SAF was already challenging due to the risks of “pretty new” technology requiring high capital expenditure.
“That’s a scary model with a volatile political environment, so mandate questioning creates this problem on steroids”, Scott said.
Others played down the risk. Glenn Morgan, partner at investment and advisory firm SkiesFifty, said “policy is always a risk”, adding that traditional oil-based jet fuel could also lose subsidies.


Asian countries join SAF mandate adopters
In Asia, Singapore, South Korea, Thailand and Japan have recently adopted SAF mandates, and Matti Lievonen, CEO of Asia-based SAF producer EcoCeres, predicted that China, Indonesia and Hong Kong would follow suit.
David Fisken, investment director at the Australian Trade and Investment Commission, said the Australian government, which does not have a mandate, was watching to see how the EU and UK’s requirements played out.
The US does not have a SAF mandate and under President Donald Trump the government has slashed tax credits available for SAF producers from $1.75 a gallon to $1.
Is the world’s big idea for greener air travel a flight of fancy?
SAF and energy security
SAF’s potential role in boosting energy security was a major theme of this week’s discussions as geopolitical tensions push the issue to the fore.
Marcella Franchi, chief commercial officer for SAF at France’s Haffner Energy, said the Canadian government, which has “very unsettling neighbours at the moment”, was looking to produce SAF to protect its energy security, especially as it has ample supplies of biomass to use as potential feedstock.
Similarly, German weapons manufacturer Rheinmetall said last year it was working on plans that would enable European armed forces to produce their own synthetic, carbon-neutral fuel “locally and independently of global fossil fuel supply chain”.
Scott said Australia needs SAF to improve its fuel security, as it imports almost 99% of its liquid fuels.
He added that support for Australian SAF production is bipartisan, in part because it appeals to those more concerned about energy security than tackling climate change.
The post Doubts over European SAF rules threaten cleaner aviation hopes, investors warn appeared first on Climate Home News.
Doubts over European SAF rules threaten cleaner aviation hopes, investors warn
Climate Change
Southern Right Whales Are Having Fewer Calves; Scientists Say a Warming Ocean Is to Blame
After decades of recovery from commercial whaling, climate change is now threatening the whales’ future.
Southern right whales—once driven to near-extinction by industrial hunting in the 19th and 20th centuries—have long been regarded as a conservation success. After the International Whaling Commission banned commercial whaling in the 1980s, populations began a slow but steady rebound. New research, however, suggests climate change may be undermining that recovery.
Southern Right Whales Are Having Fewer Calves; Scientists Say a Warming Ocean Is to Blame
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