The world we grew up in is disappearing.
From the tropics to the poles, the effects of climate change are transforming environments that humans have known since prehistory.
Chances of saving the world's coral reefs are disappearing because of mass bleaching, according to a paper by scientists on four continents published in the journal Science last week. Such events, caused by warmer-than-usual waters, had never been observed until the 1980s, but are now occurring once every six years. Many marine biologists now believe they'll see the demise of coral reefs worldwide within their lifetimes.
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