News

  1. Humans

    Disputed finds put humans in South America 22,000 years ago

    Brazilian site may have been home to people before the Clovis hunters.

    By Bruce Bower
  2. Planetary Science

    Life-friendly environment confirmed on Mars

    Drill sample from bedrock reveals chemistry that could have supported microbial life.

    By Andrew Grant
  3. Humans

    Students bring home big prizes for science projects

    The 2013 Intel Science Talent Search awards teens for research.

    By Meghan Rosen
  4. Tech

    Plastic implant replaces three-quarters of man’s skull

    The polymer cranium was made using a 3-D printer.

    By Rachel Ehrenberg
  5. Life

    Tasmanian devil disease reveals its secrets

    The contagious cancer evades the animal’s immune system by turning off key genes.