Thursday, February 12, 2015
Should We Be Afraid Of Aliens?
Should We Be Afraid Of Aliens? : 13.7: Cosmos And Culture : NPR: "Stephen Hawking, among others, has suggested that we should be very careful with aggressive aliens — that, in fact, we should be as stealthy as possible, lest we reveal our presence and location to predatory ETs in our cosmic neighborhood."
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