Another familiar claim of the environmentalist community is that the Amazon constitutes the "lungs of the earth," supplying one-fifth of the world’s oxygen. But, according to Antonio Donato Nobre of INPE, and other eco-scientists, the Amazon consumes as much oxygen as it produces, and Stott says it may actually be a net user of oxygen.
"In fact, because the trees fall down and decay, rainforests actually take in slightly more oxygen than they give out," says Stott. "The idea of them soaking up carbon dioxide and giving out oxygen is a myth. It’s only fast-growing young trees that actually take up carbon dioxide."