Uncategorized

  1. Genetics

    A CRISPR spin-off causes unintended typos in DNA

    One type of CRISPR gene editor makes frequent and widespread mistakes, studies in mice and rice reveal.

    By Tina Hesman Saey
  2. Health & Medicine

    A second HIV patient has gone into remission after a stem cell transplant

    A second person with HIV has gone into remission after receiving blood stem cells from a donor unable to make a protein needed by the virus.

    By Aimee Cunningham
  3. 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
  4. 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.