Where does the environmental movement find itself today, and where might it be heading? From PBS Newshour.
A courageous band of civil rights activists called Freedom Riders who in 1961 challenged segregation in the American South.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
French settlers in Louisiana merged with African Americans, Afro-Caribbeans and others to create Cajun and Zydeco musical traditions.
The impact of tuberculosis in America, once the deadliest killer in human history.
A new religion called spiritualism affected the nation in the era of Abraham Lincoln, P. T. Barnum and Frederick Douglass.
William "Buffalo Bill" Cody's legendary exploits helped create the myth of the American West that still endures today.
P.T. Barnum -- huckster, con man, promoter, entertainer and founder of "The Greatest Show on Earth".
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.