News

  1. Astronomy

    Oldest solar system unearthed by Kepler

    Five rocky planets orbit the 11.2-billion-year-old star Kepler 444, suggesting that Earth-sized worlds formed in the early universe.

    By Christopher Crockett
  2. Climate

    Central American fires may intensify U.S. tornadoes

    Smoke originating from Central American fires may strengthen U.S. tornadoes.

    By Thomas Sumner
  3. Neuroscience

    Immune system may remember and adapt to stress

    Mice without immune systems who receive stressed immune cells are less anxious and more social, suggesting that the immune system can adapt to stress.

    By Ashley Yeager
  4. Paleontology

    Snakes crawled among Jurassic dinosaurs, new timeline says

    Earliest snake fossils provide evidence snakes evolved their flexible skulls before their long, limbless bodies.