Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:
http://www.sciencemag.org/news/2017/07/what-it-would-take-kill-all-life-earth
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Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:
http://www.sciencemag.org/news/2017/07/what-it-would-take-kill-all-life-earth