Uncategorized

  1. Planetary Science

    Earthly Field Trip to Mars

    Interested in seeing Martian landscapes and features up close on Earth? This Web site offers kids a “field trip” to formations in the state of Washington that resemble those found on the Red Planet. Take a look at floodplains, volcanoes, basalt columns, lakebeds, canyons, sand dunes, and more. Go to: http://www.kidscosmos.org/field-trip-to-mars.html

    By Science News
  2. Math

    Rolling with Reuleaux

    Have you ever wondered why the cover of a manhole is nearly always round? Why isn’t it oval or square? Reuleaux curve based on an equilateral triangle. Reuleaux curves based on the pentagon (top) and heptagon (bottom). The usual answer is that a circular lid, unlike a square or an oval cover, won’t fall through […]

    By Ivars Peterson
  3. Materials Science

    Molecular Memory: Carbon-nanotube device stores data in molecules

    Scientists have created a memory device in which data are encoded in switching molecules called catenanes that are attached to a carbon nanotube.