Wednesday, December 28, 2016

If aliens have killed themselves off, what hope is there for us?


If aliens have killed themselves off, what hope is there for us?
Absent signs of life, astronomers are starting to look for extraterrestrial nuclear wars and pandemics.

December 28, 2016 at 11:29AM
via Digg http://ift.tt/2hoc9vg

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