The first commercial nuclear power stations started operation in the 1950s.
There are about 440 commercial nuclear power reactors operable in 31 countries, with over 380,000 MWe of total capacity. About 65 more reactors are under construction.
They provide over 11% of the world's electricity as continuous, reliable base-load power, without carbon dioxide emissions.
56 countries operate a total of about 240 research reactors and a further 180 nuclear reactors power some 140 ships and submarines. So it really important to our life.