News

  1. Earth

    Seismic waves resolve continental debate

    New analyses of seismic waves that have traveled deep within Earth may answer a decades-old question about the thickness of the planet's continents.

    By Sid Perkins
  2. Health & Medicine

    Protein implicated in Parkinson’s disease

    Inhibiting the natural protein cyclo-oxygenase-2, or COX-2, might help fight Parkinson's disease.

    By Nathan Seppa

  3. Out of China: SARS virus’ genome hints at independent evolution

    The newly identified SARS virus is the product of a long and private evolutionary history, clues from its genome suggest.

    By Ben Harder
  4. Materials Science

    Blunt Answer: Cracking the puzzle of elastic solids’ toughness

    Rubbery materials prove tougher than theory predicts because cracks trying to penetrate those stretchy materials grow blunt at their tips.