The Amazon has suffered its most destructive fire season in more than two decades, releasing a staggering 791 million tons of carbon dioxide—on par with Germany’s annual emissions. Scientists found that for the first time, fire-driven degradation, not deforestation, was the main source of carbon emissions, signaling a dangerous shift in the rainforest’s decline. Using advanced satellite systems and rigorous simulations, researchers uncovered vast damage across Brazil and Bolivia, exposing the fragility of the Amazon’s ecosystems.