Geothermal energy constantly gets overshadowed by other sources of clean energy, like wind and solar, because it's still more expensive. But with every passing year, it gets closer to its time in the spotlight.
Geothermal is a stable & plentiful source of clean energy available all around the world, including in the United States (especially in the West). But that industry is still in its infancy and very little of that resource's potential is being tapped.
A former Nazi bunker located in Hamburg, Germany is about to get a full-scale makeover. The building, which looks like a giant LEGO, will supply 3,000 homes with heating and 1,000 of those with electricity, cutting 6,600 tons of CO2 per year.