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J. Robert Oppenheimer (L) & Gen. Leslie R. Groves at ground zero examine remains of a base of the steel test tower at the Trinity Test site of a nuclear bomb; as part of the Manhattan Project in New Mexico, Sep. 1945. Los Alamos National Laboratory
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Symbol radiation on grass background
How Radioactive Isotopes are Used in Medicine
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12 Novels Considered the “Greatest Book Ever Written”
Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.
6 Wars of Independence
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Cruel and Unusual Punishments: 15 Types of Torture
July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.
Will Light-Speed Space Travel Ever Be Possible?
Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England
7 of the World’s Most Dangerous Festivals
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10 of the World’s Most Dangerous Fish
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks

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Facts

Also Known As Fm • element 100

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Key People

Glenn T. Seaborg
Glenn T. Seaborg
American chemist

Related Quizzes and Features

Quiz
Periodic Table of the elements concept image (chemistry)
Facts You Should Know: The Periodic Table Quiz
Concept artwork on the periodic table of elements.
118 Names and Symbols of the Periodic Table Quiz