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August 20, 2010
Q. Are we humans alone in the universe, or are there other intelligent beings out there somewhere?
A. “I can only answer this by wearing three hats in succession,” says astrobiologist Paul Davies in “The Eerie Silence.” First, Davies “The Scientist” believes we're probably the only intelligent beings in the observable universe, and he would not be very surprised if the solar system contains the only life of any kind. That “dismal conclusion” comes from weighing the many improbabilities involved in the origin and evolution of life.
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