Costa Rica: Global warming didn’t kill the golden toad

Science NOW: The golden toad was last seen in 1989 in the Costa Rican cloud forest of Monteverde--and 5 years later, its disappearance was the first extinction to be blamed on humanmade global warming. New evidence, however, suggests that humans may not have been at fault after all. Here's the current line on what drove the golden toad extinct. As humans pumped carbon dioxide and other greenhouse gases into the atmosphere, Costa Rican rainforests became hotter and dryer in the mid-1980s. These ......

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