For more than 40 years, the Soviet Union detonated hundreds of nuclear weapons at the Semipalatinsk test site in Kazakhstan. Authorities claimed the region was uninhabited — but in reality, hundreds of thousands of civilians lived nearby and were exposed to radioactive fallout.

A thousand feet beneath the desert, the United States conducts experiments to verify that its weapons work. But some fear a live test could come... Step inside the secret lab where America tests its nukes FRENCHMAN FLAT, Nev. — In the middle of a dry ...

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from cancer and other diseases over time, according to a new report delving into the deadly legacy.

Satellite images reveal activity at two Iranian nuclear sites, suggesting that Tehran may be obscuring its efforts to salvage any materials remaining there.

As the United States and Russia signal a return to nuclear testing, Australia’s remote monitoring station plays a crucial role in global verification.

North Korean dictator Kim Jong Un said the country will close down its main nuclear testing site sometime in May, South Korea says. South Korean presidential press secretary Yoon Young-chan said Sunday that Kim agreed to the plan during a meeting between ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE - A mushroom cloud rises from a test blast at the Nevada Test Site on June 24, 1957. (U.S. Energy Department via AP, File) VIENNA (AP) — In the wake of U.S. President Donald Trump ...

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from cancer and other diseases over time, according to a new report delving into the deadly legacy. More than 2,400 nuclear devices were ...