The Wilderness Society provides general information about backpacking and hiking in the United States and different trails in other countries. Information on each trail includes a brief sketch of the host country, including basic climatic information, local topography, and the type of terrain that each trail traverses.
Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) is a joint U.S.-German-Italian project that uses a highly sophisticated imaging radar to capture images of Earth that are useful to scientists across a great range of disciplines. The instrument was flown on two Endeavor flights - mission STS-59 April 9-20, 1994 and mission STS-68 September 30-October 11, 1994.
The U.S. Geological Survey (USGS) maintains the Earth Science Information Centers (ESIC's) to sell aerial photographs, remotely sensed images from satellites, a wide array of digital geographic and cartographic data, as well as the Bureau's well-known maps.