News

  1. Animals

    The teeth of ‘wandering meatloaf’ contain a rare mineral found only in rocks

    The hard, magnetic teeth of the world’s largest chiton contain nanoparticles of santabarbaraite, a mineral never seen before in biology.

    By Charles Q. Choi
  2. Planetary Science

    Laser experiments suggest helium rain falls on Jupiter

    Compressing a hydrogen and helium mixture with lasers shows that the two elements separate at pressures found within gas giant planets.

    By Emily Conover
  3. Anthropology

    Hunter-gatherers first launched violent raids at least 13,400 years ago

    Skeletons from an ancient African cemetery bear the oldest known signs of small-scale warfare.

    By Bruce Bower
  4. Health & Medicine

    Here are answers to 3 persistent questions about the coronavirus’s origins

    Calls to double down on investigations into where SARS-CoV-2 came from — nature or a lab accident — are rising as answers remain scarce.