A 4.3 magnitude quake in Fars province was confirmed natural by United States Geological Survey and Comprehensive Nuclear-Test-Ban Treaty Organization, dismissing nuclear test rumors amid debate over ...

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

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.

The United States has revealed new details about a Chinese underground nuclear test that it claims happened nearly six years ...

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 ...

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

Add Yahoo as a preferred source to see more of our stories on Google. Some believe Donald Trump has been engaging in nuclear sabre-rattling intended to intimidate China - Alex Brandon/AP The United ...

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 ...

A DF-17 road-mobile medium-range ballistic missile is seen during a military parade in Beijing's Tiananmen Square on September 3, 2025. China may want to develop new nuclear warheads for its ...