I was watching with interest the other night Jon Stewart’s interview of Elizabeth Kolbert, author of a new book, The Sixth Great Extinction. There have been five great extinction events in the 550-million year history of multi-celled life on Earth, events in which abnormally large numbers of species die out
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We were hell on other species before we were even us
Homo sapiens has been driving other species into extinction for a very long time. We are familiar with more recent events on our own continent with the annihilation of species such as the passenger pigeon and, very nearly, the American bison. But it started much earlier than that. Paleontologists suspect
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