Today in History is a daily newsletter from Britannica. (more) Today in History—April 7: That time the U.S. briefly lost a nuclear bomb Written by Michele Metych Michele Metych is the lead editor for Today in History at Encyclopædia Britannica. Michele Metych Fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors Last updated Apr. 3, 2026 •History At 10:33 am on this day in 1966, Spain’s embassy sent out a message and a sigh of relief: The U.S. military had finally recovered the 20-megaton hydrogen bomb it had accidentally dropped in the Mediterranean. Today in History is a daily newsletter from Britannica. Encyclopædia Britannica, Inc. Want to learn more about what happened on April 7, or any other day of the year? Sign up to receive the newsletter in your inbox every...

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