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  1. Humans

    Letters from the December 18 & 25, 2004, issue of Science News

    Think fast “Car deaths rise days after terror attacks” (SN: 10/9/04, p. 237: Car deaths rise days after terror attacks) mentions that the traffic volume was reduced following the attacks, yet fails to mention another likely factor in the increased deaths: Less traffic usually results in higher average speeds. Del DietrichSan Jose, Calif. Our sun, […]

    By Science News
  2. Earth

    Ancient Heights: Leaf fossils track elevation changes

    A new technique using altitude-dependent differences in fossil leaves may make it possible to chronicle the rise and fall of mountain ranges over millions of years.

    By David Shiga
  3. Tech

    Magnetic Bit Boost: Quantum rewiring for computer memories

    A quantum-mechanical memory component that might replace electronic computer memories has come closer to practicality.