Uncategorized

  1. 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
  2. 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
  3. Archaeology

    To find answers about the 1921 race massacre, Tulsa digs up its painful past

    A century ago, hundreds of people died in a horrific eruption of racial violence in Tulsa. A team of researchers may have found a mass grave from the event.

    By Helen Thompson
  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.