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.
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Key developments
Iran war and food systems
PLANTING AT RISK: The war in the Middle East “has hit the epicentre of global fertiliser production”, threatening both the spring planting season in the northern hemisphere and winter planting in Australia, according to a comment by the Daily Telegraph’s world economy editor. Ambrose Evans-Pritchard noted that the supply of urea, ammonia and sulphur transported through the Persian Gulf has been “shut off” for nearly a month. The world’s two largest fertiliser producers, China and Russia, have recently reduced fertiliser exports, he added.
COMING CRISIS: Fuel costs and food prices are skyrocketing in Asia and Africa as the Iran war unfolds, reported the Financial Times, ahead of the new “two-week ceasefire”. According to the outlet, the impacts “could be even bigger than the crisis triggered by Russia’s 2022 full-scale invasion of Ukraine”. Even regions less directly exposed to the conflict, such as the US, “will feel the effects through higher [food] prices”, the outlet added.
CLIMATE FACTORS: New Scientist noted that the severity of the rise in food prices will depend on the length of the conflict and “how hard global warming-fuelled weather extremes” impact crops this year. A separate New Scientist piece pointed out that reducing farming’s dependence on fossil fuels could “prevent this from happening again [and] help slash the massive greenhouse gas emissions from farming”.
Nature talks outcomes
CONSERVATION WINS: The 15th Conference of the Parties to the UN Convention on Migratory Species ended on 29 March with an agreement to add 40 migratory species, including cheetah, striped hyena and snowy owls, to the convention’s “protected list”, reported Down To Earth. The conference in Brazil also delivered plans for conserving multiple species that live in the same ecosystems, such as the Amazon. The convention’s executive secretary said the new conservation rules are expected to be implemented “immediately”, added the outlet.
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MARINE PROTECTION: The conference was considered a “significant step forward” for marine species, as it reached a number of agreements, including commitments for reducing bycatch and a decision for countries to include “critical marine designations into their national biodiversity strategies”, reported Oceanographic. The meeting also adopted transboundary action plans for conserving the “critically endangered” European eel and the tope shark, it said.
HIGH SEAS MEETING: The final preparatory meetings for the High Seas Treaty ended on Friday with “meaningful progress in several key areas”, according to the Fishing Daily. Countries agreed on the “functioning of most subsidiary bodies” and several financial matters, but the “negotiations lost momentum toward the end of the session”, noted the outlet. The Financial Times reported that China is pushing to host the UN permanent body that will oversee High Seas Treaty talks. Earth Negotiations Bulletin reported that the treaty’s first summit will likely take place in New York in January 2027.
News and views
- FOREST LOSS: Deforestation in Indonesia surged by 66% in 2025, hitting its highest rate in eight years as a “result of weak environmental protections and an ambitious food and energy self-sufficiency drive”, said Reuters.
- DEFORESTATION REGULATION: Brazil introduced a new regulation last week requiring banks to use satellite data provided by the government to verify if borrowers of rural loans have deforested farmlands in the Amazon or other forests since July 2019, reported Folha de São Paulo.
- FACTORY FARMING: The UK government is overhauling planning rules to “make it easier to build intensive livestock farms despite concerns about water pollution, air quality and local opposition”, according to documents obtained under the freedom-of-information act by the Guardian.
- INITIATIVE ‘ABANDONED’: The European Commission has officially “abandoned” its sustainable EU food system initiative, according to the commission’s website. The framework was meant to integrate sustainability into all food-related policies, including for food labelling and public procurement.
- BLUE MILESTONE: The UN Environment Programme’s World Conservation Monitoring Centre announced that 10% of the global ocean is officially protected; however, the figure needs to triple for the world to meet its conservation commitments by 2030, according to EFE Verde.
Spotlight
Return of UK’s tallest bird
This week, Carbon Brief reports on how cranes, the UK’s tallest bird at more than 1 metre high, are making a remarkable comeback from extinction.
Standing at more than 1m with a 2m wingspan, cranes are comfortably the tallest bird in the UK.
Hundreds of years ago, they were a common sight in the UK. But, in the 1600s, they went extinct in the UK, due to overhunting and the large-scale loss of their wetland habitat. (Henry III reportedly served 115 cranes at one of his Christmas feasts in 1251.)
However, in 1979, a small number of wild cranes flew in from Europe and settled in Norfolk, eastern England. As efforts to restore and protect the UK’s wetland habitats have grown over the past few decades, so has the number of cranes.
In 2025, cranes had a record breeding season in the UK, with 87 pairs raising 37 chicks, according to data from the Royal Society for the Protection of Birds (RSPB). This has brought the total number of cranes in the country to around 250, says the charity.
Cranes and carbon
The majority of the UK’s growing crane population can be found in wetland areas that have been actively restored and protected by the RSPB and other conservation groups.
This includes Lakenheath Fen, a former carrot field in Suffolk, eastern England, that over the past 30 years has been restored into a diverse wetland habitat for birds, otters and water voles, among other species.
Cranes first arrived at Lakenheath from Europe in 2007, site manager Dave Rodgers explained to Carbon Brief:
“The conditions we created – a patchwork of developing reedbed, interspersed with shallowly flooded areas – were perfect for cranes. In 2007, there was an influx of birds from Europe. Two pairs flew over Lakenheath, landed and they’ve been nesting here ever since.”
As well as providing a home for cranes and other vulnerable water birds, the restoration of Lakenheath Fen and other sites like it is also helping to reduce the UK’s greenhouse gas emissions.

This is because Lakenheath Fen is a peatland.
Peatlands are waterlogged environments where plants decay very slowly, eventually forming a carbon-rich soil called peat. Across the world, peatlands cover just 3% of land area, but store more carbon than all of Earth’s trees combined.
In the UK, around 80% of all peatlands are degraded, with the greenhouse gases they emit accounting for around 5% of the country’s total emissions.
Rodgers explained:
“By re-wetting the peat, we’re almost completely preventing further loss of carbon from the soil.”
Flying future
According to the RSPB, cranes are now found at multiple wetland sites in the south-east and south-west of England. Some have even settled as far as Scotland.
With wetland restoration taking place across the country, including in cities such as London and Bristol, it is likely the birds will continue to spread to new areas, said Rodgers:
“There are a lot of wetlands around the country that would be suitable for cranes to nest in that are not currently occupied.
“With care, we should see cranes expand more widely across the country so that people who don’t currently have them might see them within the next 10 years.”
Watch, read, listen
NEW CHANCE FOR BEAVERS: A video from the Guardian showed the positive effects of the reintroduction of beavers into the wild in England.
INKCAP RELAUNCH: The UK online nature publication, Inkcap, headed by former Carbon Brief journalist Sophie Yeo, has relaunched with a new look.
BIRDS ARE BACK: Mongabay covered five bird species thought extinct that were rediscovered in 2025.
GREAT SHIFT: This Nature Answers podcast told the story of a community in Côte d’lvoire, where farmers moved from climate scepticism to adopting climate-adaptation measures.
New science
- Many insects in the tropics are already approaching their heat limits – the upper bound of the temperatures at which they can live | Nature
- More than 8,000 species could face increased exposure to wildfires by 2100 as a result of climate change under a moderate-warming scenario | Nature Climate Change
- Two temperate tree species, European beech and downy oak, can adapt to rising temperatures – but not when those high temperatures are accompanied by drought | Proceedings of the National Academy of Sciences
In the diary
- 10 April: Djibouti presidential election
- 12 April: Hungary presidential election
- 13-18 April: World Bank/International Monetary Fund spring meetings | Washington DC
- 21-22 April: 17th Petersberg climate dialogue | Berlin, Germany
- 21-25 April: UNFCCC climate week 1 | Yeosu, South Korea
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 April 2026: Iran war drives up food prices | Two nature talks conclude | Return of UK’s tallest bird appeared first on Carbon Brief.
Climate Change
Night Skies and Shifting Stars: How Indigenous Celestial Knowledge Tracks a Changing Climate
When the land no longer answers the stars the way it once did, Indigenous peoples are among the first to notice — and the first to ask why.
A Sky Full of Knowledge
Look up on a clear night on Turtle Island and you’re seeing a sky that has guided human life for thousands of years. Across Indigenous nations in Canada, detailed systems of celestial knowledge developed not as abstract science but as living, practical guides —telling people when to plant, when to harvest, when herds would move, and when ice would come. This astronomical knowledge was woven into language, ceremony, and everyday life, passed down through generations with remarkable precision.
The Mi’kmaq and the Celestial Bear
Among the Mi’kmaq of Atlantic Canada, star stories are ecological calendars, precise and functional. The story of Muin and the Seven Bird Hunters connects the annual movement of what Western astronomy calls Ursa Major to the seasonal cycle of hunting and harvest: the bear rises in spring, is hunted through summer, and falls to earth in autumn. This knowledge was brought to broader public attention in 2009 during the International Year of Astronomy, when Mi’kmaq Elders Lillian Marshall of Potlotek First Nation and Murdena Marshall of Eskasoni First Nation shared the story through an animated film produced at Cape Breton University narrated in English, French, and Mi’kmaq.¹ The story encodes specific observations about when and where to hunt, and which species to expect at which time of year. It is science in narrative form.
The Anishinaabe and the Seasonal Star Map
Among the Anishinaabe peoples of the Great Lakes and northern Ontario, celestial knowledge forms part of a comprehensive seasonal understanding. Knowledge keepers like Michael Wassegijig Price of Wikwemikong First Nation have described how Anishinaabe constellations quite different from those of Western astronomy connect the movement of the heavens to naming ceremonies, seasonal gatherings, and land practices.² The Royal Astronomical Society of Canada now offers planispheres featuring Indigenous constellations from Cree, Ojibwe, and Dakota sky traditions, recognizing their value as both cultural heritage and ecological knowledge systems.³
When the Stars and the Land Fall Out of Rhythm
Here’s the challenge that climate change has introduced: the stars still move on their ancient, reliable schedule. But the land no longer always responds as expected. Migratory birds that once arrived when certain constellations appeared are now showing up earlier or later. Ice that once formed in predictable windows is forming weeks late, or not at all. Berry harvests, fish runs, animal migrations, all once timed by celestial cues accumulated over millennia are shifting. Indigenous knowledge holders across Canada describe this as a kind of dissonance: the sky remains faithful, but the land has changed.⁴
Long-Baseline Ecological Records
Far from being historical curiosity, Indigenous celestial knowledge systems are now being recognized by researchers as long-baseline ecological calendars —records of how nature behaved over centuries, encoded in story and ceremony. When an Elder observes that a particular star rising no longer predicts the arrival of certain geese, that observation represents a departure from a pattern that may have held true for hundreds of years. The Climate Atlas of Canada integrates Indigenous knowledge observations alongside western climate data, recognizing that both contribute meaningfully to understanding ecological change.⁵
Keeping the Knowledge Alive
Language revitalization and land-based education programs are helping ensure this knowledge reaches the future. From youth astronomy nights on-reserve to the integration of Indigenous sky stories in school curricula, there is growing recognition that these knowledge systems belong to what comes next, not only what came before. As Canada grapples with accelerating ecological change, the quiet precision of thousands of years of skyward observation offers something no satellite can fully replicate: a continuous record of the relationship between the cosmos and a living land.
Blog by Rye Karonhiowanen Barberstock
Image Credit: Dustin Bowdige, Unsplash
References
[1] Marshall, L., Marshall, M., Harris, P., & Bartlett, C. (2010). Muin and the Seven Bird Hunters: A Mi’kmaw Night Sky Story. Cape Breton University Press. See also: Integrative Science, CBU. (2009). Background on the Making of the Muin Video for IYA2009. http://www.integrativescience.ca/uploads/activities/BACKGROUND-making-video-Muin-Seven-Bird-Hunters-IYA-binder.pdf
[2] Price, M.W. (Various). Anishinaabe celestial knowledge. Wikwemikong First Nation. Referenced in: Royal Astronomical Society of Canada Indigenous Astronomy resources.
[3] Royal Astronomical Society of Canada. (2020). Indigenous Skies planisphere series. RASC. https://www.rasc.ca/indigenous-skies
[4] Neilson, H. (2022, December 11). The night sky over Mi’kmaki: A Q&A with astronomer Hilding Neilson. CBC News. https://www.cbc.ca/news/canada/newfoundland-labrador/hilding-neilson-indigenizing-astronomy-1.6679072
[5] Climate Atlas of Canada. (2024). Prairie Climate Centre, University of Winnipeg. https://climateatlas.ca/
The post Night Skies and Shifting Stars: How Indigenous Celestial Knowledge Tracks a Changing Climate appeared first on Indigenous Climate Hub.
https://indigenousclimatehub.ca/2026/04/night-skies-and-shifting-stars-how-indigenous-celestial-knowledge-tracks-a-changing-climate/
Climate Change
World ‘will not see significant return to coal’ in 2026 – despite Iran crisis
A much-discussed “return to coal” by some countries in the wake of the Iran war is likely to be far more limited than thought, amounting to a global rise of no more than 1.8% in coal power output this year.
The new analysis by thinktank Ember, shared exclusively with Carbon Brief, is a “worst-case” scenario and the reality could be even lower.
Separate data shows that, to date, there has been no “return to coal” in 2026.
While some countries, such as Japan, Pakistan and the Philippines, have responded to disrupted gas supplies with plans to increase their coal use, the new analysis shows that these actions will likely result in a “small rise” at most.
In fact, the decline of coal power in some countries and the potential for global electricity demand growth to slow down could mean coal generation continues falling this year.
Experts tell Carbon Brief that “the big story isn’t about a coal comeback” and any increase in coal use is “merely masking a longer-term structural decline”.
Instead, they say clean-energy projects are emerging as more appealing investments during the fossil-fuel driven energy crisis.
‘Return to coal’
The conflict following the US-Israeli attacks on Iran has disrupted global gas supplies, particularly after Iran blocked the strait of Hormuz, a key chokepoint in the Persian Gulf.
A fifth of the world’s liquified natural gas (LNG) is normally shipped through this region, mainly supplying Asian countries. The blockage in this supply route means there is now less gas available and the remaining supplies are more expensive.
(Note that while the strait usually carries a fifth of LNG trade, this amounts to a much smaller share of global gas supplies overall, with most gas being moved via pipelines.)
With gas supplies constrained and prices remaining well above pre-conflict levels, at least eight countries in Asia and Europe have announced plans to increase their coal-fired electricity generation, or to review or delay plans to phase out coal power.
These nations include Japan, South Korea, Bangladesh, the Philippines, Thailand, Pakistan, Germany and Italy. Many of these nations are major users of coal power.
Such announcements have triggered a wave of reporting by global media outlets and analysts about a “return to coal”. Some have lamented a trend that is “incompatible with climate imperatives”, while others have even framed this as a positive development that illustrates coal’s return “from the dead”.
This mirrors a trend seen after Russia’s invasion of Ukraine in 2022, which many commentators said would lead to a surge in European coal use, due to disrupted gas supplies from Russia.
In fact, despite a spike in 2022, EU coal use has returned to its “terminal decline” and reached a historic low in 2025.
Gas to coal
So far, the evidence suggests that there has been no return to coal in 2026.
Analysis by the Centre for Research on Energy and Clean Air found that, in March, coal power generation remained flat globally and a fall in gas-fired generation was “offset by large increases in solar and wind power, rather than coal”.
However, as some governments only announced their coal plans towards the end of March, these figures may not capture their impact.
To get a sense of what that impact could be, Ember assessed the impact of coal policy changes and market responses across 16 countries, plus the 27 member states of the EU, which together accounted for 95% of total coal power generation in 2025.
For each country, the analysis considers a maximum “worst-case” scenario for switching from gas to coal power in the face of high gas prices.
It also considers the potential for any out-of-service coal power plants to return and for there to be delays in previously expected closures as a result of the response to the energy crisis.
Ember concludes that these factors could increase coal use by 175 terawatt hours (TWh), or 1.8%, in 2026 compared to 2025.
(This increase is measured relative to what would have happened without the energy crisis and does not account for wider trends in electricity generation from coal, which could see demand decline overall. Last year, coal power dropped by 63TWh, or 0.6%.)
Roughly three-quarters of the global effect in the Ember analysis is from potential gas-to-coal switching in China and the EU.
Other notable increases could come from switching in India and Indonesia and – to a lesser extent – from coal-policy shifts in South Korea, Bangladesh and Pakistan.
However, widely reported policy changes by Japan, Thailand and the Philippines are estimated to have very little, if any, impact on coal-power generation in 2026. The table below briefly summarises the potential for and reasoning behind the estimated increases in coal generation in each country in 2026.
Dave Jones, chief analyst at Ember, stresses that the 1.8% figure is an upper estimate, telling Carbon Brief:
“This would only happen if gas prices remained very high for the rest of the year and if there were sufficient coal stocks at power plants. The real risk of higher coal burn in 2026 comes not from coal units returning…but rather from pockets of gas-to-coal switching by existing power plants, primarily in China and the EU.”
Moreover, Jones says there is a real chance that global coal power could continue falling over the course of this year, partly driven by the energy crisis. He explains:
“If the energy crisis starts to dent electricity demand growth, coal generation – as well as gas generation – might actually be lower than before the crisis.”
‘Structural decline’
Energy experts tell Carbon Brief that Ember’s analysis aligns with their own assessments of the state of coal power.
Coal already had lower operation costs than gas before the energy crisis. This means that coal power plants were already being run at high levels in coal-dependent Asian economies that also use imported LNG to generate electricity. As such, they have limited potential to cut their need for LNG by further increasing coal generation.
Christine Shearer, who manages the global coal plant tracker at Global Energy Monitor, tells Carbon Brief that, in the EU, there is a shrinking pool of countries where gas-to-coal switching is possible:
“In Europe, coal fleets are smaller, older and increasingly uneconomic, while wind, solar and storage are becoming more competitive and widespread.”
In the context of the energy crisis, Italy has announced plans to delay its coal phaseout from 2025 to 2038. This plan, dismissed by the ECCO thinktank as “ineffective and costly”, would have minimal impact given coal only provides around 1% of the country’s power.
Notably, experts say that there is no evidence of the kind of structural “return to coal” that would spark concerns about countries’ climate goals. There have been no new coal plants announced in recent weeks.
Suzie Marshall, a policy advisor working on the “coal-to-clean transition” at E3G, tells Carbon Brief:
“We’re seeing possible delayed retirements and higher utilisation [of existing coal plants], as understandable emergency measures to keep the lights on, but not investment in new coal projects…Any short-term increase in coal consumption that we may see in response to this ongoing energy crisis is merely masking a longer-term structural decline.”
With cost-competitive solar, wind and batteries given a boost over fossil fuels by the energy crisis, there have been numerous announcements about new renewable energy projects since the start of war, including from India, Japan and Indonesia.
Shearer says that, rather than a “sustained coal comeback” in 2026, the Iran war “strengthens the case for renewables”. She says:
“If anything, a second gas shock in less than five years strengthens the case for renewables as the more secure long-term path.”
Jones says that Ember expects “little change in overall fossil generation, but with a small rise in coal and a fall in gas” in 2026. He adds:
“This would maximise gas-to-coal switching globally outside of the US, leaving no possibility for further switching in future years. Therefore, the big story isn’t about a coal comeback. It’s about how the relative economics of renewables, compared to fossil fuels, have been given a superboost by the crisis.”
The post World ‘will not see significant return to coal’ in 2026 – despite Iran crisis appeared first on Carbon Brief.
World ‘will not see significant return to coal’ in 2026 – despite Iran crisis
Climate Change
Disaster Declarations Ripple Through South Texas Amid Water Crisis
Small towns around Corpus Christi worry where they’ll fall on the pecking order if the region’s water runs out.
At least six small cities and towns in the Coastal Bend region of Texas issued disaster declarations in the last two weeks, begging not to be forgotten amid a spiraling water crisis.
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