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The New Age of Extinction http://apocadocs.com/s.pl?1238861844
...There have been five extinction waves in the planet's history — including the Permian extinction 250 million years ago, when an estimated 70 percent of all terrestrial animals and 96 percent of all marine creatures vanished, and, most recently, the Cretaceous event 65 million years ago, which ended the reign of the dinosaurs. Though scientists have directly assessed the viability of fewer than 3 percent of the world's described species, the sample polling of animal populations so far suggests that we may have entered what will be the planet's sixth great extinction wave. And this time the cause isn't an errant asteroid or megavolcanoes. It's us... Through our growing numbers, our thirst for natural resources and, most of all, climate change — which, by one reckoning, could help carry off 20 percent to 30 percent of all species before the end of the century — we're shaping an Earth that will be biologically impoverished. A 2008 assessment by the International Union for Conservation of Nature found that nearly 1 in 4 mammals worldwide was at risk for extinction...
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[Read more stories about:
anthropogenic change, ecosystem interrelationships, sixth extinction, massive die-off]
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