Nuclear energy is not a fossil fuel or any fuel at all. Radiation is used to create energy. The energy is "the Fuel"
No BUT it is also not a fossil fuel. Nuclear energy gives off zero CO2 and is virtually inexhaustible in terms of future power availability. Many countries embrace this technology as an awesome step...
fossil fuels
Fossil
Uranium in the form of uranium dioxide, enriched to about 5% U-235