Tropical forests nearing critical temperatures thresholds

Global warming is driving leafy tropical canopies close to temperatures where they can no longer transform sunlight and CO2 into energy, threatening total collapse if the thermometer keeps climbing, according to a study Thursday.

Climate change behind extreme Amazon drought: study

Climate change was the chief driver of the devastating drought that gripped the Amazon last year, say researchers, as warming threatens one of the world's most important ecosystems for stabilizing the global climate.

Planting trees in wrong places heats the planet: Study

Planting trees in the wrong places can actually contribute to global warming, scientists said on Tuesday, but a new map identifies the best locations to regrow forests and cool the planet.

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