The U.S. and Russia have both recently threatened to resume nuclear testing, alarming the international community and ...

The nation conducted its last explosive nuclear test in 1992, after a series of treaties limited testing capabilities.

Hydronuclear experiments, barred globally since the 1990s, may lie behind President Trump’s call last month for the United ...

Since 1996, only 10 nuclear tests have been conducted, by 3 countries: India, Pakistan and North Korea; but Trump has claimed ...

The memo came from Brandon Williams, the head of the National Nuclear Security Agency, which carries out U.S. nuclear tests.

US researchers at Idaho National Laboratory (INL) have produced the first full-scale batch of enriched fuel salt for the world’s first fast-spectrum, salt-fueled reactor test. The new production line ...

The Palo Verde Nuclear Generating Station, just west of Phoenix, is conducting its annual siren test on Thursday.

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...

New research validates UAP phenomenon using 70-year-old astronomical photos, showing connections between nuclear weapons ...

China's nuclear weapons development has long concerned the U.S., which has warned that the East Asian power could possess ...

WEST PALM BEACH, Fla. — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was the ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...