News

  1. Paleontology

    Sudden heat spikes did in Ice Age’s mammoth mammals

    Abrupt warming and excessive hunting by ancient humans were responsible for the disappearance of many large mammals, including woolly mammoths, during Earth’s last glacial period.

    By Thomas Sumner
  2. Paleontology

    Museum fossil links snakes to lizards

    Scientists have discovered the fossilized remains of the first four-legged snake. The fossil bridges the gap between snakes and lizards.

    By Meghan Rosen
  3. Life

    Cells from grandma help keep fetus safe

    Grandmother’s cells may watch over grandchildren in the womb.

    By Tina Hesman Saey
  4. Neuroscience

    Boosting estrogen, only in the brain

    Scientists have developed a chemical that transforms into the hormone estrogen in the brain, but not the body, of rats.