Piero Ginori Conti

Using the Earth's natural heat, or geothermal energy, to generate power is nothing new.

Italy's Piero Ginori Conti used steam from the Earth to power light bulbs back in 1904.

The geothermal energy stored in the top eight kilometers of the Earth could theoretically generate enough electricity to meet global demand more than 100 times over.

The technology's proven, it's renewable, it's green, it decarbonizes heat, which is a huge challenge, and it's local.