A mushroom cloud from the Operation Castle Bravo, a 15-megaton experimental thermonuclear device, detonated in the Bikini Atoll, Marshall Islands. (Photograph: US Air Force/Public Domain)
Nuclear Weapons

US H-Bomb Testing Forgotten In Media Frenzy Over North Korea Threat

As the U.S. detonated nuclear bomb after nuclear bomb in the Marshall Islands – amounting to 23 tests of both fission and fusion bombs over a 12-year period – evacuated islanders and others nearby were intentionally exposed to radiation fallout from the testing, in what would become known as “Project 4.1.”