Experimental fuel capsules being staged at the Advanced Test Reactor. Source: Clean Core Thorium Energy A ...

Idaho National Lab partners with Clean Core to test a new thorium-based nuclear fuel that may improve safety, cut waste, and ...

They have discovered that gamma rays, produced during the deuterium-tritium nuclear reaction, can serve as a precise and alternative means of measuring the power output of new fusion reactors.

In March, Finland successfully completed the first test of its encapsulation plant, which, if finished, will become the world’s first permanent underground storage facility for radioactive waste.

The first phase of the attack did not hit the most likely repository of Iran’s near-bomb-grade nuclear fuel.

For the first time, nuclear fuel enriched above 5% will be irradiated in a commercial U.S. reactor, the Department of Energy announced Thursday.

Utah’s Office of Energy Development and nuclear startup Valar Atomics signed a memorandum of understanding on May 16.

After spending months inside the ruins of a nuclear reactor at Japan's tsunami-hit Fukushima Daiichi plant, a robot has delivered a small sample of melted nuclear fuel.

The U.S. nuclear-power renaissance is plunging ahead without a long-term solution for some 92,500 metric tons of spent fuel piled up at power plant sites around the country.

David E. Sanger has covered Iran’s nuclear program, and the efforts to prevent it from obtaining an atomic weapon, for more than two decades.