The "A" stands for "atomic," and was quickly adopted as a name for the earliest nuclear weapons. The A-Bomb wasn't just tested by the U.S., as it was infamously used twice against an enemy ...

Find out just how close the Nazis came to building atomic weapons during World War II, and view the only known diagram of a German nuclear bomb.

Atomic bombs work via a process called nuclear fission that involves atom splitting. Shortly after scientists discovered nuclear fission, the possibility of a bomb was quickly realized. Albert ...

Oppenheimer's nuclear fallout: How his atomic legacy destroyed my world We, the hidden casualties of the Cold War, have been fighting for recognition and just compensation for years.

The third most powerful test took place earlier in 1962, with a yield of 21.1 megatons. Much like the other very high-yield Soviet bomb tests, Test 147 was detonated in the air over Novaya Zemlya ...

The US concentrated its attack on Fordow, an enrichment plant built hundreds of feet underground. Aerial photos give ...

The threat is real: Our nuclear weapons are much more powerful than Oppenheimer's atomic bomb Nine countries now have nuclear weapons. Modern arsenals include nukes 80 times more powerful compared ...

Deep below a mountain in Iran sits a once-secret uranium enrichment facility which is threatening to drag the United States into the Israel-Iran conflict.

The A-Bomb wasn't just tested by the U.S., as it was infamously used twice against an enemy combatant — the only times to date that nuclear weapons have been used in war — when it was dropped ...