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  1. Planetary Science

    The sands of Titan

    Although the surface of Saturn's moon Titan is cold enough to freeze methane, it has sand dunes like those in the Arabian Desert, according to radar images taken by the Cassini spacecraft.

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  2. Physics

    A well-spun egg also jumps

    Physicists have demonstrated that spinning a hard-boiled egg horizontally makes it jump into the air.

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  3. Chemistry

    Leaking lead

    A disinfectant used by some U.S. water utilities dissolves lead in laboratory experiments.

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  4. Tech

    Directing tubular traffic

    Researchers have shown that they can steer individual protein tubes along tiny channels of a glass chip.