Radium City, U.S.A.

In the spring of 1921, the preeminent French physicist Marie Curie (1867-1934) traveled from her home in Paris to the United States where, on Friday, May 20, she attended a White House ceremony during which President Warren G. Harding presented her with a key symbolizing a gift of one gram of radium from the women of America. Costing one hundred thousand dollars, this tiny amount of radium would...
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