News

  1. Physics

    Single photon detected but not destroyed

    Researchers build first instrument that can witness the passage of a light particle without absorbing it.

    By Andrew Grant
  2. Health & Medicine

    Prion mutation yields disease marked by diarrhea

    Rare prion ailment starts in adulthood, attacking the gut before brain.

    By Nathan Seppa
  3. Humans

    Bigger numbers, not better brains, smarten human cultures

    An experiment using a computer game supports the idea that big populations drove the evolution of complex human cultures.

    By Bruce Bower
  4. Oceans

    Extremely salty water is at least 100 million years old

    Supersaline sediments off East Coast shed light on Atlantic Ocean’s early history.