News

  1. Health & Medicine

    A newfound blood biomarker may one day predict longevity

    Levels of six RNA molecules in the blood ID’d older adults likely to survive two more years. Whether it will work for other people is a big question.

    By Isha Ishtiaq
  2. Paleontology

    A large fossil leg bone hints at T. rex’s origins, but scientists disagree

    A new analysis of a large fossil shinbone suggests T. rex ancestors came from North America instead of Asia. Not everyone agrees.

    By Carolyn Gramling
  3. Genetics

    Why African striped mice can be the best of dads — or the worst

    Environmental cues can flip a molecular switch in the brain, turning males from caregivers to killers.