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  1. Physics

    LHC revs up

    The world’s most powerful atom smasher achieves its most energetic collisions yet.

    By Laura Sanders
  2. Health & Medicine

    Identical twins may not be so identical when it comes to gut bacteria

    A new study suggests that intestinal microbe populations vary widely from one person to another.

    By Laura Sanders
  3. Life

    Elephant legs bend like ‘big human limb’

    Mechanics suggests the creatures are more limber than thought and use all their legs to come to a four-way stop.

    By Lisa Grossman
  4. Health & Medicine

    Cap or cork, it’s the wine that matters most

    Comparative study finds that screw tops can perform just as well in regulating the aging process.