News

  1. Astronomy

    Astronomers may have found a record-breaking pair of black holes

    At some 60 billion times the mass of the sun, this dark void could be home to a pair of black holes that are due for a cosmic collision.

    By Mara Johnson-Groh
  2. Health & Medicine

    Some South American rodent-borne viruses may spread as climate warms

    Some rodents in South America carry arenaviruses and hantaviruses. Climate change may bring both to regions where neither is currently a threat.

    By Erin Garcia de Jesús
  3. Psychology

    Yawning is contagious — even in the womb

    Rather than catching a yawn on sight, muscles squeezing the uterus could be the trigger for a fetus to catch a yawn from its mother.