NASA
Nasa: Visible Earth
From NASA, "Images, visualizations, and animations," that students will find extremely interesting and helpful in their study of the earth. Includes pictures of environmental impacts, erosion, coastal processes, atmosphere, and lots more.
NASA
Nasa: Visible Earth: 3 D Data From Ice Sat
3-D Data from ICESat: Orbiting the Earth at nearly 17,000 miles per hour, NASA's Ice, Cloud and land Elevation Satellite (ICESat) is collecting spectacular new three-dimensional measurements of the Earth's surface and atmosphere.