News

  1. Earth

    Soil eroded by glaciers may have kick-started plate tectonics

    How plate tectonics got going is a mystery. Now scientists say they’ve found a key part of the story: massive piles of sediment dumped in the ocean.

    By Carolyn Gramling
  2. Astronomy

    The accretion disk around our galaxy’s black hole has been spotted at last

    The Milky Way's central black hole has a disk of gas and dust orbiting it, astronomers can finally say with confidence.

    By Lisa Grossman
  3. Environment

    Chemicals in biodegradable food containers can leach into compost

    PFAS compounds from compostable food containers could end being absorbed by plants and later eaten by people, though the health effects are unclear.