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  1. Humans

    Letters from the August 13, 2005, issue of Science News

    Bay listen It was interesting to read of processing mundane noise to produce an ultrasound image of the geology of Los Angeles (“Seismic noise can yield maps of Earth’s crust,” SN: 6/11/05, p. 382). A big question in the state is the deep structure of San Francisco Bay. Clearly, the bay and the valleys extending […]

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  2. Earth

    Study finds low battlefield hazard in depleted uranium

    A calculation of the health impacts from the use of depleted uranium in antitank munitions projects small increases in the risk of lung cancer and colon cancer, but only for the most heavily exposed individuals.

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  3. Materials Science

    Nanotube carpet mimics gecko feet

    Carbon nanotubes can outdo the extraordinary sticking power of a gecko's foot hairs.