How long can Uranium last for nuclear power ? 5 billion years at double current world electricity usage.
Breeder reactors: A renewable energy source by Bernard L. Cohen, American Journal of Physics, 1983 (H/T Crowlspace Uranium can last for 5 billion years with a withdrawal rate of 6,500 tonne per year from the oceans [with breeder reactors this would be double current world electricity usage]. This estimate does not include using Thorium which …