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News that life might exist or have existed on Mars or somewhere else in our universe excites many. But should we really be happy to hear that news? What are the philosophical implications of the possibility of extraterrestrial life? If life can blossom in our own cosmic backyard, then that means that the universe is most likely saturated with life forms. And if that’s the case, why haven’t we found any evidence of other civilizations? Is it because all civilizations are prone to suicidal destruction at a certain point in their development? If so, how might we avoid this fate? The Philosophers search for life with Paul Davies from Arizona State University, author of "The Eerie Silence: Renewing Our Search for Alien Intelligence."

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