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How does geothermal energy work?

Can we harness the Earth’s heat as an alternative to oil? Yes, partly if we use geothermal energy, which makes it possible to produce different kinds of energy from the heat drawn from underground. It ...
CNN

A startup discovered a hidden source of abundant, clean energy — and did it in an unusual way

Nothing on the surface of this scrubby expanse of western Nevada desert, overlooked by towering, craggy mountains, gives even a hint of what lies beneath. But a few thousand feet underground is a ...
The New York Times

To Extract Hot Water From the Earth, a Plan to Pipe It In First

Developers are using a new geothermal technology in Germany to produce clean energy. Detail of the teeth of a drill bit that will be used in the next phase of drilling. Credit...Roderick Aichinger for ...