Samples of "trinitite" created during the world’s first nuclear bomb test in 1945 contain unique crystals never seen before.

Letter writers discuss Iran nuclear enrichment, President Trump and White House Correspondents’ Association Dinner.

Al Jazeera spoke with MIT professor Ted Postol about what Iran could do with its 440kg of 60 percent enriched uranium.

A new report by the Middle East Media Research Institute (MEMRI), published May 4,  focuses on Iranian Majlis member Dr.

Watch how the first atomic bomb test unfolded, as scientists pushed the limits of physics in a race to end the war. Behind the scenes, there were real fears that the explosion could trigger a chain ...

India’s nuclear arsenal has always been modest—large enough to deter China and Pakistan from a first strike, and not ...

If the largest nuclear bomb ever designed by the Soviet Union were dropped on downtown Atlanta, anything within a nearly five-mile radius would be "effectively vaporized." Within 20 miles of the ...

President Trump ruled out using nuclear weapons in Iran on Thursday, saying there’s no need. “Why would I use a nuclear weapon when we’ve totally, in a very conventional way, decimated them without it ...

Imagine a 150-kiloton nuclear bomb exploded in the city closest to you. Do you know how the city, its surrounding region, and its inhabitants would be affected? If you can't think of much more than "a ...