Uncategorized

  1. Health & Medicine

    Scientists identify a long-sought by-product of some drinking water treatments

    Chlorine-based water treatments create many by-products, but one has been elusive. Its identification sets the stage for studying its health effects.

    By Sid Perkins
  2. Animals

    For adult chimps, playing may be more important than previously thought

    A multiyear study of dozens of wild, adult chimps suggests that play helps reduce tension and boost cooperation among individuals.

    By Gennaro Tomma
  3. Astronomy

    This is the first close-up image of a star beyond our galaxy

    The first-ever close-up of an extragalactic star looks different than expected and might give a view of what stars look like at the end of their lives.