Uncategorized

  1. Materials Science

    Model Growth: Simulations expose branching nature of polymer crystals

    Using computer models, scientists have uncovered previously unknown facets of the physics underlying polymer crystal growth.

    By Alexandra Goho
  2. Earth

    Cool Harvest: Frost on sea ice may boost atmosphere’s bromine

    Frost flowers, the delicate crystals that sometimes grow atop fresh sea ice, can be a substantial source of ozone-destroying bromine in lower atmosphere near the poles.

    By Sid Perkins
  3. Earth

    No Deep Breathing: Air pollution impedes lung development

    Spending one's childhood in a community with polluted air stalls lung development roughly as much as does having a mother who smokes.

    By Ben Harder
  4. Humans

    Letters from the September 11, 2004, issue of Science News

    Say what? I don’t think anyone should be surprised that squirrels have figured out how to say “nyah, nyah” to rattlesnakes (“Ultrasound alarms by ground squirrels,” SN: 7/3/04, p.