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  1. Humans

    Letters from the March 10, 2007, issue of Science News

    Cosmic cling At least on Earth, rock impacts result in charging of the particles (“Rocky Finding: Evidence of extrasolar asteroid belt,” SN: 1/6/07, p. 5). In space, wouldn’t this have a great effect on the motion of the rocks? Stuart HoenigTucson, Ariz. According to researchers, it’s true that the electrostatic charging of space dust and […]

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  2. Body clock affects racing prowess

    When it comes to athletic performance, we're all night owls, a new study suggests.

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  3. Archaeology

    Spicy finds from before Columbus

    Ancient Americans cultivated and ate chili peppers at least 6,100 years ago, setting the stage for the spicy condiment to spread throughout the world after Columbus' voyages to the New World.