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The nuclear power era began in June 1954 when the 5 MWe Obninsk reactor in the Soviet Union fed its first kilowatt hours into a public grid. Calder Ha...
Chernobyl and Fukushima: What the Two Level 7 Accidents ChangedOnly two accidents have reached INES level 7, the maximum on the international scale. Chernobyl in 1986 destroyed a reactor with design flaws and a fl...
What Happens When a Nuclear Plant RetiresDecommissioning follows a defined sequence: shut down, defuel, decontaminate, dismantle, and restore the site. Defueling removes the spent fuel to poo...
Fusion Milestones: Ignition, Records and the Road AheadFusion passed real thresholds in the 2020s. The National Ignition Facility achieved ignition in December 2022, getting more fusion energy out than las...
Nuclear Power by the NumbersAbout 440 power reactors operate in roughly 30 countries, supplying near 9 percent of global electricity. The United States runs the largest fleet at ...
Research Reactors: The Quiet WorkhorsesSome 220 research reactors operate worldwide, and most people never hear of them. They make the molybdenum 99 that decays into technetium 99m, the iso...