This site describes snow crystals and snowflakes. Although a common meteorological phenomenon, snow crystal growth is a fascinating and poorly understood process, in which remarkably complex and beautifully symmetric structures appear, quite literally, out of thin air. The many facets of snow crystals are described here, along with the attempts to understand their formation. Site highlights include ... Full description.

The National Weather Service provides weather and marine data from buoys surrounding North America, the Carribean, and Great Britain. Historical and realtime data are featured. Data include wind, waves, atmospheric pressure, air and water temperature, and dewpoint. Frequently Asked Questions explain how the marine stations collect and transmit data, how quality is assured, and how the National Data ... Full description.

The Federation of Earth Science Information Partners (ESIP Federation) brings together data and information providers from government agencies, universities, non-profit organizations, and businesses in an effort to make Earth science information available to a broader community. The objective of the Federation is to develop methods that make space-based imagery and related Earth science data easy ... Full description.

This clearinghouse-style site from the Environmental Literacy Councilprovides links to information, articles and educational materials on several environmental subjects, including water. The water-specific segment features information on topics ranging from hydroelectric power to eutrophication to rogue waves. The articles featured cover scientific and social aspects of water. The Teaching Water segment ... Full description.

This Web site includes shares the images, stories and discoveries that emerge from NASA Earth science research, including its satellite missions, in-the-field research and climate models. View global maps of NASA data, check out the Image of the Day and images of current events, and read feature articles and blogs. Also includes special collections of NASA images, including the World of Change series, ... Full description.

This website features the most complete set of astronaut photography of Earth from the beginning of human spaceflight in the 1960s to the digital photographs being downlinked daily from the International Space Station. The underlying database includes over 430,000 records in 2002, with new data added daily. The pages are maintained by the data source at NASA's Johnson Space Center and include search ... Full description.

For ecologists, the horseshoe crab is an important creature- a vastly adaptable organism that predates most species on the planet, with a lifecyle that is interlocked with other animals. Users can view information, photographs, and diagrams that explain the anatomy, range and habitat, lifecycle, ecological niche, reproductive cycle, and medical uses of the horseshoe crab. Full description.

The Earth Science Picture of the Day is an image archive that is hosted by the Universities Space Research Association in association with NASA's Goddard Space Flight Center with a record of entries beginning September 2000. Each image is accompanied by a descriptive text and links to relevant supporting websites. Keyword searching is provided. Browsing by related fields includes: agriculture, astronomy, ... Full description.

This Web site provides an online version of Geomorphology from Space. The book was designed for use by the remote-sensing science and educational communities (undergraduate to graduate level) to study landforms and landscapes. The core of the book is a gallery of space imagery consisting of 237 plates, each treating a geographic region where a particular landform theme is exemplified. Commentary, ... Full description.

This poster/handout is a companion to the EOSDIS Data Sampler #1 CD-ROM for the Western U.S. Wildfires 2000. It features coincident images taken on 8/30/2000 by the instruments ASTER, CERES, MISR, and MODIS, and data from August 22-27 for MOPITT, at various combinations of spectral bands, look angles, and resolutions. Text on the front assists the user to understand what the images display. Background ... Full description.