1.0 link 137227 http://www.huffingtonpost.com/josie-garthwaite/sixth-mass-extinction-und_b_137227.html Nearly half of all species are disappearing in what biologists from the University of California at Santa Barbara are calling "the sixth mass extinction of both plants and animals." They published research this week in the Proceedings of the National Academy of Sciences after analyzing 40 studies of grassland ecosystems and performing a kind of conservation triage. Lead researcher Marc Cadotte said in a press release from the university, "We need to know which species matter the most...

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