There is always new information about Earth's environment being posted to the Web that you may find useful as a supplement to our text or as a jumping off point from which to learn more on your own. Here are a few sites to start with:

Breaking News: Check out these recent news stories on topics related to Environmental Geology.

• Augustine volcano erupts in Alaska
• Key metals growing scarce?

Other Sites of Interest:

• Plate motion calculator: Program that calculates the components of plate motion at any point on the Earth's surface using the NUVEL1A-NNR model [Chuck Meertens, UNAVCO].

• Earthquake Hazard Maps: Maps of the United States showing the likelihood that an earthquake of at least a given strength will occur in an area during the next 50 years [USGS].

• Volcanic Hazards: General information on volcanic hazards (including lahars), as well as hazard assessments for specific volcanoes in the Pacific Northwest [USGS Cascade Volcano Observatory].

• Virtual River: Interactive exercise that introduces the study of stream hydrology and challenges you to determine the discharge and flood characteristics of two simulated rivers [CSU Los Angeles].

• USGS Mineral Resource Program: Information on the production and use of a wide variety of mineral commodities in the U.S. [USGS].

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	Last updated August 10, 2009 .