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  1. Humans

    Letters

    Letters from the Jan. 10, 2004, issue of Science News.

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  2. Earth

    When testosterone gets down and dirty

    Testosterone excreted by livestock can pass through soils, which may explain new findings of fish-altering hormonal activity in water downstream of cattle feedlots.

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  3. Astronomy

    X-ray images highlight galaxy collisions

    A new study provides graphic evidence that X-ray observations may be the best way to identify ancient collisions between galaxies.

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  4. Health & Medicine

    SARS vaccine triggers immunity in monkeys

    An experimental vaccine against the SARS virus shows promise in a test on monkeys.

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  5. 19365

    I do not know about the rest of your readers, but I do “hear” at least some low frequency sounds, but not with my ears.