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Scientific American

Searching for Extraterrestrials, July 2000
Narrated by: uncredited
Length: 35 mins
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Publisher's Summary

In a special section on the search for extraterrestrials, "Where Are They?" explores how likely alien civilizations are to exist, and "Where They Could Hide" discusses the fact that no SETI program has ever found a verifiable alien radio signal. In "Intergalactically Speaking," the vastness and vagaries of space will force interstellar correspondents into extreme measures, if we are to make a credible search for extraterrestrial life. These articles originally appeared in Scientific American for July 2000.
Want more Scientific American? You can listen to previous issues by clicking on archives under periodicals.
©2000 Scientific American

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