At 1:00 a.m. Pacific Time on Dec. 5, 2022, the National Ignition Facility at Lawrence Livermore National Laboratory in California created nuclear fusion without thermonuclear detonation. The experiment, heralded in the Department of Energy’s own release as history-making and announced Tuesday by Secretary of Energy Jennifer Granholm, converted 2.05 megajoules of laser energy into 3.15...