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.
In October 1961, the Soviet Union detonated Tsar Bomba, the most powerful nuclear weapon ever built. With a yield of 50 ...
A local government in Japan voted Monday to restart the world's largest nuclear power plant, which has been closed since 2011 Fukushima nuclear disaster.