Geothermal energy uses heat from underground to make electricity and heat buildings. It's a clean energy source with low greenhouse gas emissions. The technology can work with different temperatures, from hot enough for electricity to warm enough for heating homes and even melting snow. Worldwide, geothermal power plants produce a lot of electricity and heat. Scientists are finding new ways to use geothermal energy, even in places with less underground water. This research could help us use more of the Earth's heat for energy.