News

  1. Humans

    U.S. population to surpass 300 million

    At approximately the middle of October, the population of the United States will hit and then quickly eclipse 300 million, according to the U.S. Census Bureau.

    By Ben Harder
  2. Animals

    Krill kick up a storm of ocean mixing

    Scientists have measured living creatures' contribution to the stirring of ocean water, and they found that little kicking krill legs do a lot.

    By Susan Milius
  3. Animals

    Silky feet

    Zebra tarantulas can secrete silk from their feet, a feat that may help them better adhere to surfaces.

    By Aimee Cunningham
  4. Health & Medicine

    Cigarettes and lead linked to attention disorder

    Nearly half a million cases of attention-deficit hyperactivity disorder among U.S.