News

  1. Planetary Science

    Martian sand ripples are taller than Earth’s

    New data gathered by a Mars-orbiting probe suggest that large ripples found in sandy areas of the Red Planet are more than twice as tall as their terrestrial counterparts.

    By Sid Perkins
  2. Health & Medicine

    Two markers may predict heart risk

    Two proteins that play a role in inflammation may serve as indicators of a person's risk of heart disease and stroke.

    By Nathan Seppa
  3. Earth

    The Next MTBE: Contamination from fuel additives could spread

    Several alternatives to the common gasoline additives methyl tert-butyl ether (MTBE) and ethanol could create environmental problems similar to those that MTBE has already caused.