News

  1. Health & Medicine

    Junk food ahead of pregnancy may harm baby-to-be

    Women who have poor diets in the year before conception might have a higher risk of delivering a baby preterm than do women who eat healthful foods

    By Nathan Seppa
  2. Astronomy

    Galaxy seed found from 3 billion years after Big Bang

    A still-growing core of a galaxy in the early universe may help astronomers understand how massive elliptical galaxies get their start.

    By Christopher Crockett
  3. Animals

    Passenger pigeon population had booms and busts

    DNA says the birds recovered from hard times — until people came along.

    By Susan Milius
  4. Life

    Autoimmune diseases stopped in mice

    Reprogramming immune cells may offer a way to treat autoimmune diseases without harming the body’s ability to fight infections.