Geothermal is an awesome way to produce a good sustainable heating and cooling system for homes and a excellent method to create electricity such as geothermal power plants. Greenland is the top dog in geothermal power plants. What if i was to say that humans can also be able to tap into volcanoes. By drilling many holes at the bottom part of each volcanoes and to geoenginere them to mass produce electricity. This would solve all the energy problems in the world. This would also prevent lots of volcano eruptions at least 50 eruptions every year. Drilling holes at the base of the mountain by creating artificial vents and drillng all the way back out into the sea floor like U-shape form causing sea water to flow into the mountain heating up the water and producing a artificial geothermal power plant. The Ring of Fire accounts (452 volcanoes more than 75% of the world's active and dormant volcanoes) quote from Wikipedia.
Geothermal power is still at its enfincy but one day we might see this technology evolve making this one of the most effective way to power up the hole planet by using are inovation and scientific knowing. Here's a old video from YouTube that will intrigue your mind.