News

  1. Tech

    Twitter kept up with Haiti cholera outbreak

    Epidemiologists find that social media can be used to track disease outbreaks as they happen, even in countries with little infrastructure.

    By Rachel Ehrenberg
  2. Health & Medicine

    Study tracks booze’s buzz in the brain

    In both heavy and light drinkers, alcohol causes the release of morphinelike chemicals.

    By Laura Sanders
  3. Space

    Planets as common as stars in Milky Way

    A new analysis suggests the galaxy is riddled with worlds.

    By Nadia Drake
  4. Health & Medicine

    Light pot smoking easy on lungs

    Infrequent marijuana users show a slight improvement in breathing capacity and middling smokers had no change, a 20-year study shows.