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Guardian: Billions of trees died in the record drought that struck the Amazon in 2010, raising fears that the vast forest is on the verge of a tipping point, where it will stop absorbing greenhouse gas emissions and instead increase them.
The dense forests of the Amazon soak up more than one-quarter of the world's atmospheric carbon, making it a critically important buffer against global warming. But if the Amazon switches from a carbon sink to a carbon source that prompts further droughts and mass tree......
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Mass tree deaths prompt fears of Amazon ‘climate tipping point’
Posted by Washington Post: Juliet Eilperin on February 3rd, 2011
Posted in Water Conservation