Humans

  1. Health & Medicine

    What the appendix is good for

    Some body parts seem pointless but in fact have purpose.

    By Emily Sohn
  2. Humans

    Writing on eggshells

    Etchings on artifacts suggest that really ancient people used symbols.

    By Stephen Ornes
  3. Health & Medicine

    Making light of sleep

    Teens are prone to sleep problems, but a little sunshine could help.

    By Susan Gaidos
  4. Health & Medicine

    Physics of running bared

    Running without shoes softens the blow.

    By Stephen Ornes
  5. Health & Medicine

    Slumber by the numbers

    Fewer than 1 in 10 teens get ideal amount of sleep.

    By Stephen Ornes
  6. Health & Medicine

    Got milk? How?

    Scientists are tracking down the first people who squeezed this nutritious liquid out of animals thousands of years ago.

    By Emily Sohn
  7. Health & Medicine

    Drugs and zzzzzz’s

    People who take the drug ecstasy are more likely to suffer from a sleeping disorder.

    By Stephen Ornes
  8. Health & Medicine

    The (kids’) eyes have it

    A visual trick opens a window on brain development.

    By Stephen Ornes
  9. Health & Medicine

    New twists for phantom limbs

    An experiment explores the connections between brain and body.

    By Stephen Ornes
  10. Health & Medicine

    Junk food junkies

    Rats on a junk food diet behave like drug addicts.

    By Stephen Ornes
  11. Health & Medicine

    The taste of bubbles

    Taste cell for sourness senses fizz, too.

    By Stephen Ornes
  12. Humans

    Meet your mysterious relative

    Ardi climbed trees and walked on two legs 4.4 million years ago.

    By Stephen Ornes