Eight of the world’s nine nuclear powers detonated a device before anyone called them nuclear powers. The ninth is Israel, and its case has gone unresolved for 47 years. Iran has detonated nothing.

Confusion on whether Iran truly needed only “two weeks to four weeks” to make a nuclear weapon, as President Donald Trump suggested on Monday, hangs over the ongoing U.S. and Israeli war on the ...

Nuclear reactors and atomic bombs both rely on nuclear fission, but does that mean that a reactor could turn into an atomic ...

In 1957, scientists detonated a nuclear bomb under the Nevada desert — and launched a steel manhole cover at unimaginable speed. Some say it reached space, beating Sputnik by months. This video ...

The printing press, the lightbulb, the internal combustion engine and the computer moved the world into a mostly better ...

Add Yahoo as a preferred source to see more of our stories on Google. The only well-exposed color image of the Trinity test. (Jack W. Aeby/Manhattan Project/Public Domain) We don't always get to ...

As global interest in nuclear weapons surges, Pakistan's recent conflict with India reveals their stark limits—failing to deter deep cross-border strikes while adding dangerous escalation risks. By ...

Instead of scrapping its network of bomb shelters after the Cold War, Switzerland kept building them. The country has more ...

Hiroshima on Thursday urged world leaders to abolish nuclear weapons amid rising global tensions, as the city marked the 81st ...

NAGASAKI, Japan (Kyodo) -- Nagasaki on Sunday warned nuclear powers and nations relying on nuclear deterrence of the ...

Explore 20 vintage photos from the age of nuclear testing, capturing test explosions, military preparations, scientists, and ...