There is an infinite amount of energy lying right beneath our feet. It is a renewable and stable energy source – free of CO2 emissions. Researchers are now planning to drill deep into the Earth to extract it. If they succeed it will be a major technological breakthrough.
Ninety-nine per cent of planet Earth has a temperature in excess of 1,000 degrees Celsius as a result of residual heat inherited from the Earth's primordial origins and the breakdown of radioactive materials. This heat can be transformed into energy – and there is more than enough to go round.
"If we succeed in drilling for and extracting even just a small fraction of this geothermal heat, it will be enough to supply the entire planet with energy – energy that is clean and safe". So said Are Lund, a senior research scientist at SINTEF Materials and Chemistry, in 2010.
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