Amazon rainforest could reach 'tipping point' by 2050, scientists warn

According to several recent studies, there is growing concern that up to half of the Amazon rainforest could reach a "tipping point" by mid-century. This tipping point refers to a threshold beyond which deforestation and climate change could irreversibly alter the wet weather environment that sustains the forest, with potentially devastating consequences for the rich biodiversity and the 2.2 million indigenous people who live there.