An in-depth discussion about the state of contemporary geothermal...
(NationalGeographic)...amid the rush to alternative energies, geothermal advocates sense a new chance to mine the heat rising from Earth's white-hot core. They plan to generate man-made steam by pumping water deep underground into hot, dry rocks in what's called enhanced or engineered geothermal systems. They also despair that governments and businesses aren't investing enough in the sophisticated technology needed to unlock the deep-seated energy.
"There's a window of opportunity where geothermal can play a part in our energy future, and we risk missing it," says David Blackwell, a geophysicist at Southern Methodist University.