Wildfires in carbon-rich tropical peatlands hit 2000-year high

Tropical peatlands, some of the planet’s largest underground carbon stores, are now burning at levels never seen in at least 2,000 years. By analyzing charcoal preserved in peat across multiple continents, scientists discovered that fires had actually been declining for more than a thousand years, largely shaped by natural climate patterns like drought. That long trend suddenly reversed in the 20th century, with a sharp surge in wildfires—especially in Southeast Asia and Australasia.