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  1. Physics

    Light step toward quantum networks

    During the transfer of a quantum data bit from matter to light, a cloud of extremely cold atoms emitted a photon carrying a version of the cloud's quantum state.

    By Peter Weiss
  2. Agriculture

    Frozen Assets

    A U.S. gene bank has begun deep-freezing semen and other livestock 'seed' for possible future use in research or breeding.

    By Janet Raloff
  3. Health & Medicine

    Assault on Autism

    A shift in scientific thinking about what causes autism is prompting a closer look at potential environmental factors.

    By Diana Parsell
  4. Math

    Football’s Overtime Bias

    The coin toss appears to play a significant role in deciding the winner in pro football's sudden-death overtime.