Extinct Animals


We are in the midst of the sixth mass extinction since life began about 3.7 billion years ago. The last extinction of this magnitude was 65 million years ago, when the K-T meteorite collided with the Gulf of Mexico, suddenly ending the Cretaceous period. According to the paleoanthropologist Richard Leakey, “For each of the Big Five there are theories of what caused them, some of them compelling, but none proven. For the sixth extinction, however, we do know the culprit. We are.” Our species is now responsible for pushing approximately “one hundred species a day, four species an hour, into evolutionary oblivion.”

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