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  1. Health & Medicine

    Tetris players are not block heads

    Playing the geometry-based computer game can boost the brain’s gray matter.

    By Laura Sanders
  2. Planetary Science

    Celestial population boom

    Large meteoroids are probably more common than telescopic surveys suggest, new analyses find.

    By Sid Perkins
  3. Ecosystems

    Google works on a different web

    Page ranking system inspires algorithm for predicting food webs’ vulnerability.

    By Susan Milius
  4. Chemistry

    New bond in the basement

    Scientists identify a sulfur-nitrogen link, never before seen in living things, critical to holding the body together.

    By Rachel Ehrenberg
  5. Health & Medicine

    Mice with mutation feel the burn

    Instead of becoming obese, mice with a mutation in an immune gene burn off the fat they eat.