It's the only one that makes life possible here on this tiny speck of dirt called Gaia. Therefore, it is special. They are a team.

Sunlight is Earth's primary source of energy. The only other source of energy the Earth has are the fissionable materials generated by the cataclysmic death of another star. These fissionable materials trapped in the Earth's crust is what gives rise to geothermal energy, which drives the volcanism on Earth while also making it possible for mankind to fuel nuclear reactors.