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Nz Business Council For Sustainable Development Article
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The Affordable Wheel of Sustainable Development
from: The earth's core is about 4,000 miles down; it's hotter there than the surface of the sun. Geothermal energy is heat that comes from the earth's core; this form of energy is renewable, and thus goes the wheel of sustainable development. Since the late 90s to the present time we have heard a lot about the wheel of sustainable development; geothermal energy is sustainable because the amount of heat removed from the core of the earth is tiny compared to the amount that remains.The earth is made up of an iron core, and then there is an outer core of molten ore called magma. The next layer, outward, is about 1,800 miles thick and is called the mantle; the outermost surface is 15 to 35 miles thick and is called the crust. The crust is broken up into plates, and this is where the volcanoes, furmaroles, geysers and hot springs are located. The Romans had a role in the wheel of sustainable development way before the term was ever thought of. They used geothermal energy to heat their buildings, to cook with, and to heat their pools; they also used water heated through geothermal energy for medicinal purposes.
The wheel of sustainable development keeps on turning as people all over the world produce electricity and heat their homes and businesses with geothermal energy. Deep wells are drilled just underground where there is heated groundwater. At the present time geothermal energy is much more affordable than conventional energy that comes from fossil fuel. Round and round goes the wheel of sustainable development as more people tap into geothermal energy.
The most geothermal reservoirs are found on the west coast of North and South America and the east coast of Asia and Australia; this area is known as the Ring of Fire. Geothermal energy can be found almost everywhere in the world, but in the United States—Alaska, California and Hawaii have the most geothermal wells. The wheel of sustainable development continues to turn in California as this state is generating the most electricity from this source. California's geysers and dry steam reservoir is the largest geothermal dry steam field in the world. Since 1960 to the present time, the wheel of sustainable development continues to turn as more people do their part to reduce the effects of global warming by switching from fossil fuel to geothermal energy.
In Iceland, the wheel of sustainable development continues to turn as 90 percent of the nation's heat and electricity comes from geothermal energy. The United States produces the most geothermal energy, but only 1 percent of electricity is generated for the entire nation; even so, California produces, with its 33 geothermal power plants, 90 percent of the nation's geothermal energy. Nevada helps to turn the wheel of sustainable development with its 15 geothermal power plants, and the states of Utah and Hawaii both have just one plant each.
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