Today in STEM History - November 1, 1952, The world's first successful hydrogen bomb, Ivy Mike, was tested in the Pacific Ocean ushering in the era of thermonuclear weapons, or fusion bombs. Today, efforts are ongoing to develop practical and economically viable controlled nuclear fusion reactors to generate clean electricity. Los Alamos National Laboratory U.S. Department of Energy United Nations Federation of American Scientists Bulletin of the Atomic Scientists Arms Control Association Intern