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  1. Science & Society

    Flu drug research takes Intel STS top honors

    A teenager’s computer analyses that identified six potential new flu-fighting compounds claimed first place at the 2014 Intel Science Talent Search.

    By Sid Perkins
  2. Animals

    Chimps catch people’s yawns in sign of flexible empathy

    Chimpanzees may show humanlike empathy, as evidenced by their contagious yawning.

    By Bruce Bower
  3. Neuroscience

    Brain chemicals help worms live long and prosper

    Serotonin and dopamine accompany long lives in C. elegans worms under caloric restriction.

    By Laura Sanders
  4. Health & Medicine

    Second wave of bird flu ups pandemic worries

    The H7N9 avian influenza virus, which first appeared in 2013, is sweeping China with a second, larger wave of illness.