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  1. Telltale Heart

    Genetics is revealing the first steps in building a heart—the organ that is first to develop, subject to the most birth defects, and difficult to heal when damaged later in life.

    By Jessa Netting
  2. Math

    Random Home Runs

    For fans of major-league baseball, one of the highlights of the current season is the rate at which Barry Bonds of the San Francisco Giants is hitting home runs. Through June 25, Bonds has hit 39 home runs in 77 games, already setting the record for the most home runs before the all-star break in […]

    By Ivars Peterson

  3. 18934

    “Faces of perception” states, “Early visual input to the right brain, which arrives via the left eye, proves vital.