Global Extinction Rates: Why Do Estimates Vary So Wildly?

Posted by Yale Environment 360: Fred Pearce on August 17th, 2015
Yale Environment 360: Most ecologists believe that we are in the midst of the sixth mass extinction. Humanity’s impact on nature, they say, is now comparable to the five previous catastrophic events over the past 600 million years, during which up to 95 percent of the planet’s species disappeared. We may very well be. But recent studies have cited extinction rates that are extremely fuzzy and vary wildly. The Millennium Ecosystem Assessment, which involved more than a thousand experts, estimated an extinction rate that......

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