Environment: The Quiet Apocalypse

Biologists warn that a mass extinction is happening now

The history of life on earth has been punctuated by mass extinctions, the sudden disappearance of a large variety of plants and animals, possibly as the result of impacts by giant meteors or comets. In one of the most dramatic die- offs, 65 million years ago, more than half of all species on earth, including the dinosaurs, vanished. While experts debate the cause of these catastrophes and the probability and timing of the next one, scientists at the recent National Forum on BioDiversity warned that another sort of mass extinction is now taking place.

The current problem has been brought on...

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