Environmental activists warn that if the Amazon reaches a point of no return, the rainforest could become a dry savannah, no longer habitable for much of its wildlife. If this happens, it could start emitting carbon -- the major driver of climate change.

Environmental activists warn that if the Amazon reaches a point of no return, the rainforest could become a dry savannah, no longer habitable for much of its wildlife. If this happens, it could start emitting carbon -- the major driver of climate change. https://t.co/nAbCB3pAzY

— CNN (@CNN) August 23, 2019