News

  1. Genetics

    Scientists replaced 80 percent of a ‘butterfly’ boy’s skin

    By correcting genes in stem cells and growing new skin in the lab, a new therapy repaired a genetic skin disease.

    By Tina Hesman Saey
  2. Astronomy

    This star cheated death, exploding again and again

    The weirdest supernova ever has lasted more than three years, and may be the third outburst from the same star.

    By Lisa Grossman
  3. Health & Medicine

    Human study supports theory on why dengue can be worse the next time around

    The amount of dengue antibodies leftover in the blood may up the chances of a severe second dengue infection, a study finds.

    By Aimee Cunningham
  4. Animals

    Face it: Sheep are just like us when it comes to recognizing people

    Sheep trained to recognize celebrity faces demonstrate that the animals have face-recognition capabilities similar to humans and other primates.