Greetings, E.T. (Please Don’t Murder Us.)

Lots of good stuff in here from Steven Johnson, but this is most surprising:

‘‘It’s because we’re getting better at technology,’’ he says. The modern descendants of the TV and radio towers that inadvertently sent Elvis to the stars are far more efficient in terms of the power they use, which means the ‘‘leaked’’ signals emanating from Earth are far fainter than they were in the 1950s.

Had not considered that. Cable may have killed our hopes of finding ET!


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