News in Brief

  1. Neuroscience

    Stem cell approach for Parkinson’s disease gets boost

    Postmortem study finds Parkinson’s patients can retain transplanted neurons for years.

    By Laura Sanders
  2. Astronomy

    Galactic collision creates huge particle collider

    New images reveal a jet of particles shooting out of a collision among four galaxy clusters.

    By Christopher Crockett
  3. Chemistry

    Decay of Leonardo da Vinci drawing reflected in light

    Light that bounces off a Leonardo da Vinci drawing, widely considered a self-portrait, has revealed extensive chemical damage that causes yellowing.

    By Beth Mole
  4. Animals

    Why tree-hugger koalas are cool

    Drooping against bark during a heat wave could save koalas from overheating.