oneUranium Fuel is a Finite Resource

Uranium is a metal that must be extracted from the earth. Unlike sun and wind, our supply of uranium is finite. We’ve already mined the most accessible sources, and at current rates of use, all cost-effective sources of uranium will be exhausted in about a century. Plutonium (which is synthesized in nuclear plants) is sometimes substituted for uranium, but it’s one of the most toxic substances on the planet, and increased use dramatically increases the risk of nuclear weapon proliferation.