News

  1. Life

    Microbes can draw the line between species

    Wasps' gut inhabitants can kill or save crossbreeds.

    By Susan Milius
  2. Anthropology

    War arose recently, anthropologists contend

    Infrequent killings among hunter-gatherer groups fit a scenario of a largely peaceful Stone Age, a study concludes.

    By Bruce Bower
  3. Tech

    Surgical tool smokes out cancer in seconds

    Sniffing for telltale molecules, method analyzes tissue with every cut.

    By Cristy Gelling
  4. Genetics

    Technique inactivates Down-causing chromosome

    Though far from a cure, the advance could eventually lead to gene therapy that alleviates some symptoms.

    By Tina Hesman Saey
  5. Animals

    Fattened livers prep white sharks for extreme migrations

    The organ's reserves enable a long journey from waters off California to Hawaii and back, tracking data suggest.