Curated OER
U.s. Department of the Interior
Has great information on environmental clean up sites around the U.S. as well as articles about protecting the environment. It is a very clear and educational way to learn about environmental restoration.
Curated OER
National Park Service: Grand Canyon Geology
Extensive information about the geology of the Grand Canyon. Looks at some principles of geology evident there, forces that have shaped its geological features, how its valleys and canyons were formed, the characteristics of the Colorado...
Curated OER
Bureau of Land Management: Bureau of Land Management
The BLM manages one in every 10 acres of land in the United States, and approximately 30 percent of the Nation's minerals. These lands and minerals are found in every state in the country and encompass forests, mountains, rangelands,...
US Geological Survey
Usgs: Determining the Depth of an Earthquake
Provides insight on how scientists determine the depth of an earthquake. Offers links to locating earthquakes as well as earthquake facts and lists.