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  1. Space

    Half-life (more or less)

    Physicists are stirred by claims that the sun may change what’s unchangeable—the rate of radioactive decay.

    By Davide Castelvecchi
  2. Chemistry

    Silk

    Mimicking how spiders make their complex array of silks could usher in a tapestry of new materials, and other animals or plants could be designed to be the producers.

    By Rachel Ehrenberg

  3. Science Future for November 22, 2008

    December 8–10 The National Conference on Science, Policy and the Environment in Washington, D.C. Visit ncseonline.org December 9–12 Arctic Change 2008 to be held in Quebec City, Canada. Visit www.arctic-change2008.com December 13 Make body products with natural ingredients taken from cacao at the New York State Museum in Albany.