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  1. Humans

    Sociologists looking at risky behavior plunge into the gene pool

    A new study of youths reveals that social scientists’ opinions still vary on the potential of studying how genes interact with social contexts.

    By Bruce Bower
  2. Earth

    Scour power

    Big storms shift coastal erosion into overdrive.

    By Sid Perkins

  3. Cancer’s little helpers

    Tiny pieces of RNA may turn cells to the dark side.

    By Tina Hesman Saey
  4. Space

    Mining for Missing Matter

    In underground lairs, physicists look for the dark stuff.

    By Ron Cowen
  5. Astronomy

    Celestial wish list

    A panel of astronomers ranks proposed astrophysics projects for the coming decade.