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A Long-Awaited Climate Experiment Is Poised to Launch in the Amazon. What Will It Find?
Ahead of a project to spray carbon dioxide into jungle plots, researchers contemplate what its results might signal about the forest’s future. Learn more about …
Climate 420 Million Years Ago Poised for Comeback
Starting in the next century, atmospheric carbon levels could begin to approach those of hundreds of millions of years ago, and have their warming effect augmen…






