News

  1. Earth

    Cholesterol boosts diesel toxicity

    Nanoparticles in diesel exhaust can activate genes that worsen cholesterol's damaging effects.

    By Janet Raloff
  2. Planetary Science

    Deep Impact and Stardust: Still on assignment

    Two sturdy NASA spacecraft have new assignments, studying comets and looking for exoplanets.

    By Ron Cowen
  3. Health & Medicine

    New Clues: Gene variations may contribute to MS risk

    Variants of two genes encoding immune system proteins may confer a higher risk for multiple sclerosis.

    By Nathan Seppa
  4. Materials Science

    Crinkle wrinkle

    Wrinkles reveal a thin film's thickness and elasticity.

    By Davide Castelvecchi
  5. Chemistry

    Soot Sense: Test tallies exposure to diesel pollution

    A chemical in urine reveals a person's exposure to diesel exhaust.