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  1. Planetary Science

    Touchdown! Phoenix lands on Mars

    The first close-up color images of the northern arctic circle on the Red Planet were recorded by the Mars Phoenix Lander spacecraft only a few hours after its flawless descent at 7:38 p.m. EDT, May 25. The detailed images suggest ice lies beneath the hard soil.

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  2. U.S. science policy needs to heed global realities

    Comment by Steven Hyman, provost of Harvard University

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  3. Science Future

    Upcoming events in science.

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  4. Humans

    From Science News Letter, June 7, 1958

    Carbon dioxide changes undifferentiated cells

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  5. Letters

    A little gravity “Britain’s biggest meteorite strike” (SN: 4/12/08, p.