The heat energy coming from within the Earth is known as geothermal energy. Scientists believe that tapping geothermal energy would be a sustainable solution to reduce the effects of global warming and dependence on fossil fuels. This article gives a brief insight into this form of energy and how it works.
The word "geothermal" is derived from the Greek word geo, meaning Earth and thermos, meaning heat. Hence, geothermal energy is the heat energy formed inside the Earth. The generation of this form of energy on the Earth's crust comes from 80% of radioactive decay of several minerals and 20% from the formation of the planet.