Deforestation and other fast-moving changes in the Amazon threaten to turn parts of the rainforest into savanna, devastate wildlife and release billions of tons carbon into the atmosphere, two renowned experts warned Friday.

Combined with recent news that the thawing Arctic permafrost may be beginning to fill the atmosphere with greenhouse gases, and that Greenland’s ice sheet is melting at an accelerating pace, it’s the latest hint that important parts of the climate system may be moving toward irreversible changes at a pace that defies earlier predictions.

The combination of rising temperatures, crippling wildfires and ongoing land clearing for cattle ranching and crops has extended dry seasons, killed off water-sensitive vegetation and created conditions for more fire.

 

https://www.washingtonpost.com/climate-environment/top-scientists-warn-of-an-amazon-tipping-point/2019/12/20/9c9be954-233e-11ea-bed5-880264cc91a9_story.html