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  1. 19848

    Your review of Alex Vilenkin’s book Many Worlds in One: The Search for Other Universes, above, contained an often-made error. In Guth’s inflation model, during the first “zillionth of a second,” the universe did not inflate “to cosmic scale.” It inflated to about the size of a large grapefruit. Then it began its slow expansion. […]

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  2. Humans

    Summer Reading

    The staff of Science News presents wide-ranging recommendations of books for readers to pack for their summer vacations.

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  3. Humans

    Letters from the June 30, 2007, issue of Science News

    Hot and cold on the topic No mention was made in “In the Zone: Extrasolar planet with the potential for life” (SN: 4/28/07, p.