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  1. Life

    Better sensing through empty receptors

    A new model suggests cells may be more sensitive to their environment than previously thought.

    By Laura Sanders

  2. Looking for a change on climate policy in Copenhagen

    A Q&A with Richard A. Bradley.

    By Richard Bradley

  3. Book Review: How We Live and Why We Die: The Secret Lives of Cells by Lewis Wolpert

    Review by Nathan Seppa.

    By Science News

  4. Book Review: Connected: The Surprising Power of Social Networks and How They Shape Our Lives by Nicholas A. Christakis and James H. Fowler

    Review by Rachel Zelkowitz.

    By Science News

  5. Grace Hopper and the Invention of the Information Age by Kurt W.