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Could It Be? Possible Signs of Extraterrestrial Intelligence - Sky & Telescope (blog)

http://www.skyandtelescope.com/astronomy-blogs/cosmic-relief-david-grinspoon/could-it-be-possible-signs-of-e-t-intelligence/

In my most recent column, I discussed the lack of evidence for technically advanced extraterrestrials. Curiously enough, in the time between writing that and its publication, some possible evidence materialized. I'm sure you've heard plenty about the ...

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