No matter where you are on Earth, you are situated right on top of a potential clean energy production hub. This is the argument at the heart of the push for expanding geothermal energy, a renewable and carbon neutral form of energy production that relies upon the heat naturally produced under the ground to create turbine-turning steam or to pump straight into residences as well as commercial buildings. Worldwide, the average “geothermal gradient” is about 30 degrees Celsius per kilometer (which translates to 86 degrees Fahrenheit for every 0.6 miles), meaning that for every kilometer deeper you drill into the Earth, ... (full story)