Geothermal Resource Descriptions

Part 4 of Geothermal Energy Under Our Feet. Hydrothermal A hydrothermal system is defined as a subterranean geothermal reservoir that transfers heat energy upward by vertical circulation of fluids driven by differences in fluid density that correspond to differences in temperature (see Figure 2). Hydrothermal systems can be classified into two types—vapor-dominated and hot water— […]

Advanced Technology and Alternative Fuel Vehicles

The surveys indicate that Americans are concerned about the environment, global warming, and related topics. Yet many do not realize that cars and trucks that guides are an important source of these problems, and that there are other choices they can do today. Most of us drive or ride vehicles that are powered by petroleum-based […]