News

  1. Math

    Test decodes dolphins’ math skills

    Dolphins could use mental math to locate prey in clouds of bubbles.

    By Meghan Rosen
  2. Health & Medicine

    Sperm analyzed, one by one

    A close look at the sex cell’s DNA reveals basic molecular processes.

    By Tina Hesman Saey
  3. Space

    Black hole theory deepens lithium crisis

    A new proposal suggests a potential new source of the element as astrophysicists try to explain why it’s in such short supply.

    By Nadia Drake
  4. Health & Medicine

    Egg in tiny doses curbs allergy

    Giving allergic kids minuscule bits of problem food and gradually increasing it over many months wipes out reactions in some, a study finds.