US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly ...

A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June 2020.

A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

Hydrogen bombs cause a bigger explosion, which means the shock waves, blast, heat and radiation all have larger reach than an atomic bomb, according to Edward Morse, a professor of nuclear engineering ...

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

Alex Wellerstein joins WIRED to answer the internet's burning questions about nuclear science. Which nations have nuclear bombs? Who decides who gets to have nuclear warheads and who doesn't? Why were ...

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

The Cold War left many inglorious legacies. The Runit dome is a good example. From the outside, it looks almost too ...