News

  1. Planetary Science

    Saturn’s icy rings are probably heating its atmosphere, giving it an ultraviolet glow

    Detecting similar emission from a distant world could help astronomers find other planets that boast bright and beautiful rings.

    By Ken Croswell
  2. Animals

    Hibernating bears don’t get blood clots. Now scientists know why

    People who sit still for hours have an increased risk of blood clots, but hibernating bears and people with long-term immobility don’t. A key clotting protein appears to be the reason why.

    By Erin Garcia de Jesús
  3. Health & Medicine

    Estrogen in birth control could be cut way back, a study suggests

    Delivering an extra low dose of estrogen, or a combination of estrogen and progesterone, at a specific time of the menstrual cycle may prevent ovulation.