1954 – Nuclear weapons testing: The Castle Bravo, a 15-megaton hydrogen bomb, is detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.
1954 - Uji coba nuklir: Castle Bravo, bom hidrogen 15 megaton, yang diledakkan di Atol Bikini di Samudra Pasifik, menimbulkan kontaminasi radioaktif terburuk yang pernah disebabkan oleh Amerika Serikat.