Thorium is an abundant material currently disposed of as waste. It is found in coal ash piles and mine tailings. A single Rare Earths mine could produce enough Thorium byproduct to power the entire planet. To do so requires a very different nuclear reactor than the kinds we use today. Not one that uses solid fuel rods, but a reactor in which the fuel is kept in a liquid state. Not one that uses pressurized water as a coolant, but a reactor that uses extremely stable molten salts.