The US military set off its largest nuclear explosion in testing 69 years ago, but scientists had no idea the blast would be that big

The Castle Bravo nuclear test produced an explosive yield of 15 megatons and was 1,000 times more powerful than the bomb that destroyed Hiroshima.
fern on MSN

We will bury you - How the Soviet Union detonated the largest bomb in history

In October 1961, the Soviet Union detonated Tsar Bomba, the most powerful nuclear weapon ever built. With a yield of 50 megatons, it was about 3,800 times stronger than the bomb dropped on Hiroshima.
Boston Herald

Russia and the US threatened to resume nuclear testing after several decades. Here is why it matters

VIENNA (AP) — The United States and Russia have both recently threatened to resume nuclear testing, alarming the international community and jeopardizing a global norm against such tests. Experts say ...