Uncategorized

  1. Astronomy

    X-Ray Visionary

    Proposed observatory would image black holes and coronas of nearby stars.

    By Ron Cowen

  2. Culture of the Sea

    Whales and dolphins strut their social stuff for scientists.

    By Bruce Bower

  3. It’s a boy! It’s a girl! It’s a mosaic embryo

    Using a new technique to examine chromosomes of in vitro fertilization (IVF) embryos at the time they're implanted in the womb, researchers report abnormalities never seen later in development, possibly explaining why IVF has a low efficiency.

    By Laura Sivitz
  4. Health & Medicine

    Study bolsters head injury, Alzheimer’s link

    Veterans who suffered a moderate or severe concussion during World War II face a heightened risk of Alzheimer's disease when they reach old age.