On June 28, 1914, Gavrilo Princip fired two shots that would change the course of history, sentencing 40 million to die in war while leaving the entire continent in tatters.

One August morning in 1974, astounded Manhattan commuters stopped to watch as Philippe Petit strolled 1,300 feet above them between the Twin Towers.

Every day between 1925 and 1935, Hachikō the dog waited at Tokyo's Shibuya train station in hopes that his dead master would return.

After Henrietta Lacks died of cervical cancer in 1951, doctors at Johns Hopkins cultured her cells for use in medical research — without her permission.

The massive coelacanth was thought to have died off over 60-million-years ago, but its 1938 discovery in South Africa shocked the scientific world.

Iron Eyes Cody quickly became Hollywood's go-to actor for Native American roles, but America's noble "Indian" was of Sicilian descent.

The Wounded Knee Massacre in 1890 was one of the most notorious episodes of violence by the United States government against Native Americans.

Marine paratrooper and Pima tribesman Ira Hamilton Hayes was immortalized in the photo of the U.S. flag being raised over Mount Suribachi during the Battle of Iwo Jima.

The Sand Creek Massacre of 1864 saw John Chivington and his 675 men slaughter hundreds of Cheyenne and Arapaho in present-day Colorado.

Was Empress of Iran Farah Pahlavi the Marie Antoinette of her day or a forward-thinking leader unappreciated in her own time?