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  1. Health & Medicine

    ‘Good bacterium’ prevents colic symptoms in newborns

    Crying time was nearly halved in babies receiving the beneficial microbe.

    By Nathan Seppa
  2. Health & Medicine

    Green tea may sabotage blood pressure medication

    Antioxidants in drink may keep intestinal cells from taking up drug.

    By Beth Mole
  3. Astronomy

    Galaxies’ missing mass may hide in gas clouds

    Vast reservoirs of previously undetected gas could account for much of galaxies’ matter, solving a cosmic mystery.

    By Gabriel Popkin
  4. Cosmology

    From Dust to Life

    In about 300 pages, this book sums up the history of all that matters — or at least everything made of matter — from the Big Bang to life on Earth.