How Did Leo Szilard's Discovery That Changed The World Forever?

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In 1938, German chemists discovered fission (how to split a uranium atom.) This discovery changed the world forever. A man named Leo Szilard knew that this discovery could power an incredibly powerful bomb. He got the idea from a science fiction book he loved that was written in 1914 by H.G. Wells called, “The World Set Free”, which talked about an atomic bomb. Leo Szilard left for America in 1939 to warn the United States that the Germans were in the lead for creating a bomb more powerful than any the world had ever seen. Szilard tried to warn President Roosevelt, but was unable to meet with him, so he turned to others. Every Scientist he went to convince of the great danger thought that he was insane, especially from getting ideas from a