The United States, Soviet Union, Britain, France and China all scrambled to develop ever more powerful nuclear weapons ...

When the U.S. military detonated the world's first nuclear weapon near New Mexico’s Jornada del Muerto desert in 1945, people living in the nearby areas were exposed to harmful radiation. Weeks later, ...

LIVERMORE, Calif. (WPVI) -- What was once highly classified can now be found on YouTube-- and this isn't a leak. The Lawrence Livermore National Lab is beginning to publish thousands of films of U.S.

Barbara Kent and a dozen other 13-year-old girls believed nuclear fallout from the Manhattan Project's Trinity test was ...

The UNGA marked the International Day against Nuclear Tests, with officials urging a ban on nuclear explosions. Leaders ...

The Holy See’s permanent observer to the U.N., Archbishop Gabriele Caccia, said the Vatican is concerned about increases in ...

Kim Jong Un on Monday watched a test of North Korea’s new high-thrust rocket engine, setting the stage for Pyongyang to test ...

North Korean leader Kim Jong Un oversaw the final test of a powerful solid-fuel engine for intercontinental ballistic ...