Our planet may be on the verge of its sixth mass extinction

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   Nedjelja, 30 Studeni 2014 21:11

African lions aren't unique. A similar story, according to Barnosky, could be told about tigers, rhinos, and any number of other species. "We have killed about 50 percent of the world’s vertebrate wildlife in just the past 40 years," he says. "We've killed half the numbers of individuals. We've fished 90 percent of the fish out of the seas. So these are big things we’re doing to the world."


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