News

  1. Health & Medicine

    Coronary Fix: Coated inserts keep vessels unclogged

    Mesh cylinders called stents, which doctors use to prop open coronary arteries, work better when they are coated with sirolimus, a drug that inhibits the accumulation of cells along the device.

    By Nathan Seppa
  2. Planetary Science

    News Splash: Strong evidence of lakes on Titan

    Using Earth-based radar to penetrate the thick atmosphere of Saturn's moon Titan, planetary scientists have the best evidence yet that the smog-shrouded moon has lakes or oceans of hydrocarbons over large stretches of its surface.

    By Ron Cowen
  3. Earth

    North vs. Northwest: Lewis and Clark diaries provide directional clue

    Observations from the Lewis and Clark expedition may offer insight into Earth's magnetic field.