SAYONARA TO HUMANITY? Approaching and crossing ecological thresholds. http://www.washingtonpost.com/national/health-science/scientists-human-activity-has-pushed-earth-beyond-four-of-nine-planetary-boundaries/2015/01/15/f52b61b6-9b5e-11e4-a7ee-526210d665b4_story.html …
7:29 AM - 16 Jan 2015
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