News

  1. Earth

    Shrinking ancient sea may have spawned Sahara Desert

    The Saharan Desert probably formed 7 million years ago as the ancient Tethys Sea, the forerunner of the Mediterranean Sea, shrank.

    By Thomas Sumner
  2. Materials Science

    Making metamaterials ‘digital’ could simplify invisibility cloaks

    The digital world of 1s and 0s has inspired a simpler way to make complex metamaterials.

    By Andrew Grant
  3. Life

    Artificial sweeteners may tip scales toward metabolic problems

    The artificial sweetener saccharin meddles with the gut’s microbial community, setting in motion metabolic changes associated with obesity and diabetes.

    By Rachel Ehrenberg
  4. Astronomy

    Tweak to dark matter may explain Milky Way mystery

    Dark matter weakly interacting with light in the early universe might have prevented satellite galaxies from forming around Milky Way, astronomers propose.