Manhattan Project Ethics: The Debates Scientists Had Before the Bomb

The popular story of the Manhattan Project runs like this: scientists built the bomb, the bomb was dropped, and then the ethical debate began. That story is wrong. Niels Bohr argued for international control in 1944. Leo Szilard organized a petition in July 1945, signed by seventy scientists, asking that the bomb not be used on cities without warning. The Franck Report of June 1945 recommended a demonstration rather than use. The ethics debate happened during the project, in real time, by the people who built it, and they were ignored. Watch the next video in the series: Watson, Crick, and the photograph that changed everything. ▶ Watch next: Photo 51: How Rosalind Franklin's Work Solved DNA (Without Her Credit) https://www.youtube.com/watch?v=KCHERrltXIg 📺 Full playlist: The Great Discoveries: How Science Built the Modern World https://www.youtube.com/playlist?list=PLlIAFxS2964-3v5fFwk4loCBPCYUW-8kY Chapters: 0:00 Scene 1 5:38 Scene 2 10:14 Scene 3 15:01 Scene 4 19:41 Scene 5 24:08 Scene 6 29:00 Scene 7 33:28 Quiz Time 36:06 Key Takeaways #explained #learn #2026 --- Disclosure The avatars and voices in this video are AI-generated. All content -- research, scripts, lesson design, and the custom video engine -- is created by a CISSP, CISM, and PMP certified professional with a Master's in Project Management, a B.S. in Information Technology, and a Doctorate in Business Administration in progress. This channel exists to make learning accessible and straightforward. Educational history-of-science series. This channel does not represent any university, research institution, or scientific body. The series presents the historical record of how scientific ideas were discovered, contested, and refined — including the mistakes, the politics, and the people who paid for being right too early. Where science and other domains intersect (religion, ethics, public policy), the series presents the arguments without endorsing a position.