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  1. Health & Medicine

    Gamblers go all-in on Ritalin

    Risk-taking may rise when healthy people use the stimulant to boost concentration.

    By Laura Sanders
  2. Life

    DNA tags may dictate bee behavior

    Chemical alterations affect genetic activity but not the genes themselves.

    By Tina Hesman Saey
  3. Life

    Flash leads to flex in lab-grown muscle

    Light-activated artificial tissue inspires dream of squirming wormbots.

    By Meghan Rosen
  4. Neuroscience

    Copycat mentality may be a hardwired way for animals to learn to avoid others’ mistakes

    Copycat mentality may be a hardwired way for animals to learn to avoid others’ mistakes.

    By Laura Sanders
  5. Physics

    Scientists seek mathematical insights for taming and explaining ‘dragon kings’

    By Tom Siegfried
  6. Physics

    Uncertainty not so certain after all

    Lab experiments undermine the first formulation of Heisenberg’s famous physics principle, but leave its broader implications intact.