Feature

  1. Paleontology

    A Makeover for an Old Friend

    Time and technology revamp a dinosaur classic.

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  2. Astronomy

    X-Ray Visionary

    Proposed observatory would image black holes and coronas of nearby stars.

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  3. Culture of the Sea

    Whales and dolphins strut their social stuff for scientists.

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  4. Astronomy

    Invisible Universe

    X-ray astronomy opens a new window on the most energetic cosmic events.

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  5. Health & Medicine

    Know Your Enemy

    Scientists mine the tuberculosis genome.

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  6. What’s Worth Saving?

    A fracas over a biological term could have huge consequences for conservation.

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  7. Animals

    Cetacean Seniors

    Whales that give new meaning to longevity.

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  8. Physics

    Breaking the Law

    Can quantum mechanics + thermodynamics = perpetual motion?

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  9. Human, Mouse, Rat . . . What’s Next?

    Scientists lobby for a chimpanzee genome project.

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  10. Earth

    The Making of a Grand Canyon

    Carving this beloved hole in the ground may not have been such a long-term project.

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  11. Health & Medicine

    Male Choice

    The search for new contraceptives for men.

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  12. Math

    Unlocking Puzzling Polygons

    Proof settles a wickedly prickly question about unfurling crinkly polygons.

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