For the first time, human beings harnessed the power of atomic fission.
By figuring out fission, physicists were able to split uranium atoms and release massive amounts of energy. This Manhattan Project work paved the way both for atomic bombs and nuclear power reactors.
Women shipfitters working on board the USS Nereus at the U.S. Navy Yard in Mare Island, circa 1943.
Department of Defense
Thousands of American women moved west to take advantage of wartime employment opportunities during WWII. For some, this version of the California dream was temporary; for others, it lasted a lifetime.
Daniel Day-Lewis won the 2012 Academy Award for his portrayal of Abraham Lincoln. Is Spielberg’s historical drama a good way to learn about the 16th U.S. president?
History movies may have Oscar potential, but their educational potential is more complicated. Should teachers use Hollywood to teach?
The grave of women’s suffrage leader Susan B. Anthony is covered with ‘I Voted’ stickers.
Clinton won women by 12 points and lost men by 12 -- creating a 24-point 'gender gap.' While that's the largest gender gap in history, the record shows that female voters were always different.
Woman with slave girl in the mid 19th century, New Orleans.
More than 150 years of scholarship and activism hasn't brought us any closer to consensus.