Are we alone in the universe because all the aliens went extinct?

Grist
By Suzanne JacobsJan 21, 2016, 6:32 pm206 pts
If we’re alone in the universe, then the big question is: Why? There are billions upon billions of Earth-like planets out there. Surely, life would have evolved many times over. But lo, Jody Foster couldn’t find any back in 1997, and today, almost 20 years later, we’re still searching. This conundrum…

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