News

  1. Health & Medicine

    Heart attack treatment: Better late than never

    A new study contradicts the notion that heart attacks run their course in less than a day and suggests that even delayed treatment can preserve endangered heart tissue.

    By Ben Harder
  2. Health & Medicine

    Cocaine abusers get more heart aneurysms

    Regular cocaine users are about four times as likely as nonusers to have an aneurysm in a coronary artery.

    By Nathan Seppa
  3. Physics

    Probing chemical signatures in an earthy way

    Scientists have performed nuclear magnetic resonance analysis using Earth's magnetic field.

    By Peter Weiss
  4. Planetary Science

    Opportunity rolls out of Purgatory

    After being stuck for nearly 5 weeks, the Mars rover Opportunity has freed itself from a sand trap on the Red Planet.