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  1. Astronomy

    Rendezvous gets more personal with Eros

    Venturing closer to a space rock than any satellite has ever gone before, the Near Earth Asteroid Rendezvous (NEAR)-Shoemaker mission last week took the sharpest images ever recorded of an asteroid.

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  2. Paleontology

    Early Biped Fossil Pops Up in Europe

    A newly described, nearly complete 290-million-year-old fossil of an ancient reptile pushes back the evidence for terrestrial bipedalism by 60 million years.

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  3. Animals

    Shielded cells help fish ignore noise

    Fish can sort out the interesting ripples from the background rush of water currents through sensors shielded in canals that run along their flanks.

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  4. Math

    Progressive Primes

    Prime numbers have all sorts of remarkable and mysterious properties.