by Joshua Howat Berger Agence France-Presse SAO FELIX DO XINGU, Brazil (AFP) – Something is wrong. Holed up in her lab, Brazilian atmospheric chemist Luciana Gatti crunches her numbers again and again, thinking there is a mistake. But the same bleak conclusion keeps popping up on her screen: the Amazon, the world’s biggest rainforest — the “lungs of the Earth,” the “green ocean,” the thing humanity is counting on to inhale our pollution and save us […]