Uncategorized

  1. Health & Medicine

    Breastfeeding should take a toll on bones. A brain hormone may protect them

    The hormone CCN3 improves bone strength even as breastfeeding saps bones of calcium, a study in mice shows.

    By Claire Yuan
  2. Astronomy

    A middleweight black hole has been spotted for the first time in our galaxy

    The rare find, discovered in the star cluster Omega Centauri, could offer clues to how black holes and galaxies evolve.

    By Lisa Grossman
  3. Artificial Intelligence

    AI’s understanding and reasoning skills can’t be assessed by current tests

    Assessing whether large language models — including the one that powers ChatGPT — have humanlike cognitive abilities will require better tests.