News

  1. Astronomy

    Astronomers have measured all the starlight ever emitted

    Astronomers used distant blazars to tally up all the stray photons roaming through space.

    By Lisa Grossman
  2. Health & Medicine

    Kids born in August are diagnosed with ADHD more than kids born in September

    August-born kids have higher rates of ADHD diagnosis than kids born in September in U.S. states with a September 1 cutoff for starting kindergarten.

    By Aimee Cunningham
  3. Genetics

    The researcher who created CRISPR twins defends his work but fails to quell controversy

    After getting a glimpse of data behind the birth of the first gene-edited babies, many scientists question the study’s ethics and medical necessity.