Brilliantly colored images of liquid crystals highlight the Web site of Kent State University's Liquid Crystal Institute. The site also features research overviews, news and conference links, and other resources devoted to the study and application of liquid crystals.Go to: http://www.lci.kent.edu/

The Tundra-Cam, operated by the University of Colorado's Institute of Arctic and Alpine Research, sits at an elevation of 11,600 feet near the U.S. Continental Divide. Visitors to the Web site can operate the remotely controlled webcam, panning across the mountainous landscape and zooming in on particular features of interest.Go to: http://tundracam.colorado.edu

NASA's Cassini spacecraft, approaching Jupiter, is detecting electromagnetic waves at low radio frequencies in the thin gas of charged particles that fills the space between the sun and its planets. Converting such waves into sound makes them eerily audible.Go to: http://www.jpl.nasa.gov/cassini/acoustic/ and http://www.jpl.nasa.gov/cassini/english/press/scinews/scinews001230a.html

For an entertaining excursion into the language, calendar, architecture, and culture of ancient Maya society, try the "Rabbit in the Moon" Web site. You'll also learn about the Maya myth that inspired the site's name.Go to: http://www.halfmoon.org.

About one in 10 Americans, most of them women, suffer recurrent bouts of intense, often debilitating headaches--a syndrome known as migraine. The Journal of the American Medical Association has developed a Web site that serves as a repository of background information and news of use to migraine victims and their families. Keep up with the latest science by checking abstracts of new journal articles. Find out more about drugs prescribed for migraine. There's even a section on alternative treatments.Sorry! This Web site is no longer available.

Spectacularly colorful, detailed microscope images of subcellular structures and organelles, from the nucleus to the Golgi apparatus, enliven this fantastic voyage into a monkey's kidney cell. Presented by the Imaging Technology Group at the University of Illinois at Urbana-Champaign, this online atlas provides not only a variety of images but also information on how the images were made.Go to: http://www.itg.uiuc.edu/technology/atlas/.

The Lupus Foundation of America provides a comprehensive Web site about this autoimmune disease, which affects up to 1.5 million people in the United States. The site offers information on the kinds of lupus, causes, symptoms, testing, and treatment. Students and researchers may also find it useful to check detailed accounts of ongoing studies.Go to: http://www.lupus.org/.