News

  1. Physics

    The M87 black hole image showed the best way to measure black hole masses

    The first image of M87’s black hole suggests it is 6.5 billion times the mass of the sun — close to what was expected based on how stars move around it.

    By Lisa Grossman
  2. Neuroscience

    The herbal supplement kratom comes with risks

    The supplement kratom can cause heart racing and agitation.

    By Laura Sanders
  3. Earth

    More than a million tiny earthquakes revealed in Southern California

    By putting millions of tiny quakes on record, scientists hope to learn more about what triggers the big ones.

    By Carolyn Gramling
  4. Genetics

    A genetic scorecard could predict your risk of being obese

    A genetic score predicts who is at risk of severe obesity, but experts say lifestyle matters more than genes.