This series of webpages is part of a course, called Astronomy 161: The Solar System, offered by the Department of Physics and Astronomy at the University of Tennessee. This unit covers the sun-centered (heliocentric)...
This United States Geological Survey (USGS) publication discusses gold prospecting in the US. The history of prospecting is covered, as well as where in the US gold can still be found and accounts of successful gold...
This site from NASA's Earth Observatory discusses the importance of fires, trace gases emissions, aerosol emissions, and NASA and NOAA missions for monitoring global fires. Case studies and data sets are also available.
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