A world on fire, twice over
By the middle of 2026, the numbers had already stopped being shocking and started being routine. More than 150 million hectares burned globally between January and April alone — a record for that stretch of the year — with Africa and Asia hit hardest and the western United States scorched by a heatwave that scientists say was made seven times more likely by climate change. By August, Spain was living through its worst fire season in its history, with a blaze near Ávila becoming the largest the country has ever recorded, and combined evacuations across Spain and France topping 300,000 people. Behind almost every one of these outbreaks sits the same grim pairing: extreme heat feeding off deepening drought, drying out soil, vegetation, and the very landscapes that once resisted flame.
It’s tempting to think of wildfire and climate change as two separate emergencies that happen to share a headline. They’re not. Burning landscapes release the carbon they’ve spent centuries storing, which warms the planet further, which dries out more land, which burns again. It’s a feedback loop — and breaking it requires solutions that work on both ends of the problem at once. That’s exactly what makes nature-based solutions so compelling: restored peatlands, wetlands, and beaver-engineered waterways aren’t just carbon sinks, and they’re not just fire defences. They’re both, simultaneously, because the underlying mechanism — keeping landscapes wet — is the same one that does both jobs.
Peatlands – the planet’s most concentrated carbon store, and its most flammable secret
Peatlands cover only about 3% of the world’s land surface, yet they hold roughly a third of all soil carbon on Earth — more carbon than every forest on the planet combined. They’ve built up that store over thousands of years, layer by waterlogged layer, because permanently saturated soil stops dead plant matter from fully decomposing. The carbon just stays put.
The catch is that this only works while the peat stays wet. Drain a peatland — for agriculture, forestry, or peat extraction — and you don’t just lose a carbon sink; you create a fuel bed. Research on drained and mined peatlands in Canada and northern Europe has found they can produce catastrophic “deep burns,” releasing hundred of tonnes of carbon per hectare in a single fire, as flames burrow down into soil that would never ignite if it were saturated. In Indonesia, wildfires in drained peatlands have released more than 0.25 billion tonnes of carbon in a single year. A 2023 study went further, showing that wildfire is now cutting the carbon uptake of even pristine northern peatlands by over a third, and pushing already-degraded peatlands from modest carbon sinks into carbon sources.
The fix is almost disarmingly simple: re-wet them. When water tables are restored, peat becomes far less flammable and far better at doing what it evolved to do. The Nature Conservancy’s restoration work in North Carolina’s pocosin peatlands illustrates the scale of the payoff — researchers estimate that rewetting 111,000 to 200,000 acres of these drained wetlands could keep millions of tons of carbon pollution out of the atmosphere while sharply cutting wildfire risk in a region already scarred by major peat fires. It’s a rare case where an ecosystem’s climate value and its fire resilience aren’t in tension at all; restoring one automatically restores the other.
Beavers: nature’s own firefighting engineers
If peatlands are the quiet, ancient carbon vaults, beavers are the scrappy, industrious architects actively rebuilding fire-resistant landscapes in real time — and they’re doing it for free.
Where beavers build dams, they don’t just create a pond. They slow rivers down, spread water sideways across floodplains, raise the water table, and turn the surrounding soil into something closer to a sponge than a fuel bed. Riparian vegetation stays green and moist through summer even as everything around it cures into tinder. The results, once you know to look for them, are striking. Satellite and drone imagery from fire-scarred landscapes across the American West repeatedly shows narrow green corridors threading through blackened hillsides, the unmistakable signature of a beaver complex that simply refused to burn. In Idaho’s Baugh Creek, researchers have documented fire stopping cold at the edge of a beaver wetland. The US Forest Service now formally recognizes these systems as natural fuel breaks that can buy firefighting crews critical time and space for containment.
Beaver populations across North America are a fraction of what they were before centuries of trapping and rebuilding them is now recognized as genuine climate infrastructure. Where live beavers aren’t yet established, land managers are building “beaver dam analogues”, simple structures of wooden posts and willow that mimic a dam’s hydrology while a beaver population gets re-established, or as a standalone intervention. In Colorado’s Trail Creek, satellite imagery of one such installation shows the landscape transforming from parched to green shortly after its installation. Modelling in California’s Sierra Nevada, a region facing severe, compounding drought and fire risk, has shown that restoring beaver dam-building capacity could meaningfully increase both surface water storage and landscape-scale fire resilience.
The carbon case matters here too. Wetter floodplains support denser, more productive vegetation, sequestering more carbon in soil and plant biomass than the drier, degraded channels beavers are being reintroduced to. But the fire case is the one turning heads in fire management circles, precisely because beaver wetlands don’t need diesel, don’t need annual budgets, and repair themselves after every storm.
Marshlands: the coast’s carbon vault and its shock absorber
Move from inlands to coastlines and the same logic holds, at even greater intensity. Salt marshes, mangroves, and other tidal wetlands store carbon per unit area faster than almost any ecosystem on Earth. Their waterlogged, salty sediments lock away organic matter that would otherwise decompose and release CO2 back to the atmosphere. Globally, an estimated 50% of tidal wetlands have already been lost since 1900 to drainage, diking, and coastal development, and each one that’s drained flips from carbon sink to carbon source, often releasing methane and CO2 for decades afterward.
Restoring these systems has a documented double return. One global review found that if the world’s biophysically restorable blue carbon ecosystems were fully brought back, it could pull roughly 841 million tonnes of CO2-equivalent out of the atmosphere each year which comparable to about 3% of global fossil fuel emissions. At the same time, restored marshes buffer coastal and inland communities against the flooding, storm surge, and saltwater intrusion that increasingly compound the drought-and-heat conditions driving inland wildfires. During wildfires coastal wetland areas provide refuge to wildlife that is oftentimes forgotten in these catastrophes, water resources for firefighting operations and increase overall landscape heterogeneity breaking up continuous fuel bed. A marshland that’s wet, spongy, and slow to drain doesn’t just store carbon but it holds moisture in the wider landscape for longer into the dry season, denying fire the parched vegetation it needs to spread from ignition point to inferno.
Why this matters more this year than last
None of these mechanisms are new science. What’s changed is the urgency. Copernicus, the European Union flagship earth flagship observation programme, recorded Western Europe’s hottest June–July period on record this summer, with scientists at the European Centre for Medium-Range Weather Forecasts pointing directly at the feedback loop driving it. As soils dry out, they lose their natural cooling capacity, which let heat build further, which dries the soil further still. Restoring wet landscapes — peatlands, beaver wetlands, marshlands — is one of the few interventions that interrupts that loop directly, by putting moisture back into the ground rather than just responding to fire after ignition.
There’s also a sobering asymmetry worth noting. A US Government Accountability Office review found that federal fuel-treatment programs are currently reaching less than 3% of high-risk federal land each year which is nowhere near the pace needed to keep up with worsening fire weather. Nature-based solutions won’t replace fuel management, prescribed burning, or emergency response, but they offer something conventional fire management can’t, a landscape that actively resists ignition rather than one that has to be defended acre by acre, year after year. A rewetted peatland or a beaver-restored floodplain keeps doing its job with no annual renewal, no fuel costs, and a carbon dividend on top.
The case for getting out of nature’s way
What connects peatland rewetting, beaver reintroduction, and marshland restoration isn’t a shared species or a shared geography — it’s a shared insight: the ecosystems best at storing carbon are, for the same underlying reason, the ecosystems best at resisting fire. Water is the common currency. Keep landscapes wet, and they hold carbon in the ground and refuse to burn. Drain them, and they do both the opposite things at once — release their stored carbon and become tinder.
As this year’s fire season has shown with brutal clarity, the old approach of fighting fires only once they start is being outpaced by the conditions driving them. Letting beavers back onto the land, rewetting the peat we drained decades ago, and giving marshlands room to flood again aren’t nostalgic gestures toward a wilder past. They’re some of the most cost-effective climate and fire mitigation infrastructure available, and unlike most infrastructure, it builds and maintains itself.