July 7 - French submarine Sromethee sinks off Cherbourg - 66 dead
July 17 - Bloody Sunday of Altona in Germany - armed communists attack a national socialist demonstration - 18 dead. Many other political street fights follow.
Geneticist J. B. S. Haldane publishes The Causes of Evolution and thereby unifies the findings of Mendelian genetics with those of evolutionary science.
November 8 - For the first time, a television network (CBS) reports on the presidential election, with commentary, vote tallys, and still cartoons of the politicians
March 31 - Eben Byers, steel tycoon and Pittsburgh socialite, from radiation poisoning due to the ingestion of the radium-laced nostrum Radithor over three years. His gruesome death made front-page news and led to the eventual regulation of radium and empowerment of the FDA.