Uncategorized

  1. Archaeology

    Humans moved into African rainforests at least 150,000 years ago

    This oldest known evidence of people living in tropical forests supports an idea that human evolution occurred across Africa.

    By Bruce Bower
  2. Health & Medicine

    Can probiotics actually curb sugar cravings?

    Some companies claim that taking beneficial bacteria can reduce the desire for sugar. But the evidence comes from mice, not people.

    By Tina Hesman Saey
  3. Life

    A new book chronicles the science of life in the air 

    Carl Zimmer’s Air-Borne recounts centuries of aerobiology’s greatest moments and mistakes.

    By Andrea Tamayo
  4. Planetary Science

    Ancient Mars wasn’t just wet. It was cold and wet

    Mars may once have held enough water to fill oceans and form coastlines.