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Earth tubes: Energy-saving cost-cutters of the future

from Huffington Post Canada

Geothermal energy isn't just about Iceland, volcanoes, lava and journeys to the centre of the earth. The vast majority of geothermal projects aren't about tapping the fiery, red-hot core of the earth, but taking advantage of the relatively constant temperature of the ground below the frost line. The ground beneath our feet is as constant as death or taxes; it's almost always between four to six degrees Celsius. more


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