Uncategorized

  1. Physics

    Snow Crystals

    This Web site, created by Caltech physicist Kenneth G. Libbrecht, is all about snow crystals and snowflakes. With many beautiful images, it provides a guide to snowflakes, information on growing snowflakes, an introduction to the physics of snowflake formation, and ideas for snow and ice activities. Go to: http://www.snowcrystals.com/

    By Science News
  2. Earth

    Balancing Act: El Niños and dust both affect coral bleaching

    Most of the annual variation in the extent of coral bleaching in the Caribbean is driven by two factors: the amount of dust and other particles suspended in the atmosphere, and the climate phenomenon known as El Niño.

    By Sid Perkins
  3. Health & Medicine

    Ticking toward Trouble: Long-term rise in heart rate portends death

    Men whose hearts beat faster over time are likely to die earlier than those whose hearts keep an unchanging cadence year after year, according to a 20-year study.