News

  1. Cosmology

    Scientists can’t agree on how clumpy the universe is

    A measurement of 21 million galaxies finds a level of clumpiness that disagrees with estimates based on the oldest light in the universe.

    By Emily Conover
  2. Neuroscience

    New guidance on brain death could ease debate over when life ends

    Brain death can be a tricky concept. Clarity from an international group of doctors may help identify when the brain has stopped working for good.

    By Laura Sanders
  3. Oceans

    Species may swim thousands of kilometers to escape ocean heat waves

    A new analysis of ocean heat waves shows latitude matters when it comes to how far fish and other sea species must go to find cooler waters.