Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Scientists from around the world gathered in Hiroshima in November with the aim of charting a path toward a world free of ...

ABSARD, Iran (AP) — State television says an Iranian scientist was killed in a targeted attack killed in Absard, a small city just east of the capital, Tehran. State TV says the attack on the ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.

Add Yahoo as a preferred source to see more of our stories on Google. Smoke rises from a location allegedly IRGC At least 71 civilians were killed during Operation Narnia, a series of strikes on ...

On May 2, 2011, a US Navy SEAL helicopter soft-crashed into the side of Osama bin Laden’s compound in Abbottabad, Pakistan. Within the hour, bin Laden was identified and assassinated. The world’s most ...

In the middle of the Pacific, a concrete dome the size of a football field holds the toxic legacy of Cold War nuclear testing ...

Scientists have detected what they described as "unusually high" levels of a radioactive substance called iodine-129 in the ...