by EnergyNOW! Wind power is one of America’s cleanest and most abundant energy resources. But it only works when the wind blows, making it less reliable than fossil fuels or nuclear power. Can wind power overcome its challenges […]
Spent nuclear fuel is about 95 percent uranium. About 1 percent are other heavy elements such as curium, americium and plutonium-239, best known as fuel for nuclear weapons. Each has an extremely long half-life — some take hundreds of thousands of years to lose all of their radioactive potency. The rest, about 4 percent, is a cocktail of byproducts of fission that break down over much shorter time periods, such as cesium-137 and strontium-90, which break down completely in about 300 years.