The Amazon absorbs huge amount of CO2 and helps to cool the world, but recent studies have shown the rainforest is approaching a tipping point, with profound implications for the global climate and biodiversity. The section in Brazil, which has suffered the most deforestation since 2006, is already producing more carbon than it absorbs, and there are worrying signs that the rest of the forest is not far behind. Josh Toussaint-Strauss investigates how the Amazon has reached this point, and how agriculture and Brazilian politics are playing a central role  

Source: The Guardian