Uncategorized

  1. Health & Medicine

    Ripples race in the brain as memories are recalled

    A fast brain wave called a ripple often came before a person’s correct answer on a memory test.

    By Laura Sanders
  2. Archaeology

    A 2,000-year-old tattoo tool is the oldest in western North America

    The artifact is made of two pigment-stained cactus spines, and has been sitting in storage since its discovery in 1972.

    By Bruce Bower
  3. Cosmology

    Hidden ancient neutrinos may shape the patterns of galaxies

    The gravitational pull of subatomic particles born in the universe’s first second seem to influence how galaxies cluster into rings.

    By Emily Conover
  4. Science & Society

    Welfare reforms may have hurt some single moms’ teenage kids

    Welfare reform was meant to help the next generation, but making moms work and capping aid has led to more harm than gain, says a new study.