Aliens may destroy humanity to protect other civilisations, say scientists | Alien life | The Guardian - discu.eu

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NASA scientist claims environmentally-minded aliens may kill all humans because of global warming. http://www.guardian.co.uk/science/2011/aug/18/aliens-destroy-humanity-protect-civilisations 38 comments 20/4/2012 nottheonion

Aliens may destroy humanity to protect other civilisations, say scientists http://www.guardian.co.uk/science/2011/aug/18/aliens-destroy-humanity-protect-civilisations 9 comments 18/8/2011 reddit.com

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We need to talk about aliens | Alien life | The Guardian http://www.guardian.co.uk/science/blog/2011/aug/22/talk-aliens-intelligence-contact 124 comments

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[1104.4462] Would contact with extraterrestrials benefit or harm humanity? A scenario analysis http://arxiv.org/abs/1104.4462 41 comments

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