Commercial nuclear reactors all work pretty much the same way. Atoms of a radioactive material split, emitting neutrons.

Nuclear power has a lot of potential, but many fear the dangers of nuclear meltdowns. Fortunately, some new reactors might make that possibility even slimmer.

TOKYO -- An underwater robot entered a damaged reactor at Japan's crippled Fukushima nuclear plant Wednesday, capturing images of the effect of its meltdown, including key structures that were torn ...

Since the 1950s, the Idaho National Lab, known locally as “the site,” has been the testing grounds for nuclear reactors for ...

— -- Since the 1979 Three Mile Island accident, there have been 18 "significant precursors," or equipment failures, at U.S. nuclear plants that sharply raise the chance of a reactor core meltdown ...

Nuclear Meltdown Scientists have managed to take their first close-up look at what happens to nuclear fuel when it becomes molten, as it would in a nuclear reactor meltdown. In an innovative lab ...

For the second time in three harrowing days, a hydrogen explosion at one of Japan’s crippled reactors at the Fukushima Daiichi nuclear plant blew the roof off a containment building — this time on ...