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Examines the history of the atomic bomb, discussing the discovery of the behavior of uranium when placed next to radioactive material, the race to build a bomb, and the impact of the weapon on societies around the world.
"A nonfiction manuscript for young readers about a group of Allied spies and codebreakers that cracked the Nazis's infamous cypher, allowing them to read secret military messages and turn the tide of World War II. During WWII, as the Germans waged war, every Nazi plan, every attack, was sent over radio. But to the Allies listening in, the messages sounded like gibberish. The communications were encoded with a powerful cypher-unless you could unlock...
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