Feature

  1. Astronomy

    Deep Impact

    Data from the Deep Impact mission reveal that the bullet that slammed into Comet Tempel 1 on July 4 excavated material that likely hadn't seen the light of day since the birth of the solar system 4.5 billion years ago.

    By Ron Cowen

  2. Food Fix

    Scientists have discovered a number of neurological connections between drug addiction and obesity.

    By Christen Brownlee
  3. Math

    Armor-Plated Puzzle

    Behind the beautiful patterns of many viral shells lie principles of pure physics and mathematics that scientists have illuminated in recent theoretical studies.

    By Peter Weiss
  4. Health & Medicine

    Targeted Attack

    Scientists are piecing together the details of how mutations in a protein called EGFR can lead to cancer, and they are designing a new class of drugs to stop the protein's destructive behavior.