The Times-Picayune series on how the Formosan termite is devastating New Orleans. A Dictionary of Units of Measure From the University of North Carolina at Chapel Hill's Center for Mathematics and Science Education. How Stuff Works is a great place to visit to learn about how things work in the world around you. Hurricane Hunters Web site for the 53rd Weather Reconnaissance Squadron, known as the Hurricane Hunters of the Air Force Reserve. National Oceanic and Atmospheric Administration Online Photograph Collection Photos of storms, sea creatures, ocean explorers, etc.
Some great images are in here.
The Nine Planets A multimedia tour of the Solar System. A fine page from the Chemistry Societies Network.