The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

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There were 13 in all working at the Radium Factory in Orange, New Jersey. But Theatre Baton Rouge's Young Actors Program will look at this true life story through the eyes of only three Radium ...

Joel Achenbach writes about science and politics for The Washington Post's National desk. He has been a staff writer for The Post since 1990. He started the newsroom’s first online column, Rough ...