Small, transportable and mass-produced “microreactors” are seen as part of the future of nuclear power. And it's underway in ...

The "nuclear" part is the chunk of uranium or plutonium that undergoes a nuclear chain reaction when the bomb is detonated. It's this chain reaction that makes nuclear weapons so devastatingly ...

Learn more here. In 1942, the Manhattan Project needed to create a chain reaction—a crucial step toward proving that it would be possible to make an atomic bomb. The scientists achieved this sustained ...

the fissile material needed to trigger a nuclear chain reaction and unleash the explosive power of a weapon. Undated photos ...

Over the years, numerous nuclear weapons have been lost in the US, which have earned the ominous designation of 'Broken ...

Canada plans to advance its nuclear technologies by focusing on its signature CANDU reactors and developing small modular ...

Their work to achieve the first nuclear reaction in 1942 marked the start of the Atomic Age, and it would change everything—from energy to medicine to the geopolitical landscape. In the 1930s, ...

Critical mass is a physics term describing the point at which there is sufficient density to attain a sustained nuclear chain ...

Reports suggest the justices are favoring Texas, though a ruling in the state’s favor could counter its recent efforts at ...

As the nuclear reactor “burns” U-235, the concentration of U-235 decreases while radioactive by-products such as fissile plutonium increase. Eventually, the nuclear chain reaction can no longer be ...

Those three neutrons make a huge difference. Uranium-238 cannot sustain a nuclear chain reaction, but uranium-235 can. In naturally occurring uranium, there is vastly more of the uranium-238 ...

After confirming that the reactor has reached a critical state where nuclear fuel is sustaining a fission chain reaction, the reactor will start generating electricity as early as Nov. 7.