Drought | Brazil Amazon | Climate Change
- The world's largest rain forest has long been a bulwark of hope for a planet troubled by climate change. Covering an area the size of the continental United States, the Amazon holds 20 percent of Earth's fresh water and generates a fifth of its oxygen. With the planet's climate increasingly threatened by surging carbon emissions, the Amazon has been one of the few forces keeping them in check. But the latest scientific evidence suggests the forest may be unable to shield us from a hotter world.