Ladies' fashions in the early 1900s mixed opulence with practicality, as evidenced in the popularity of the shirtwaist, worn by increasing numbers of women entering the American workforce. In this gallery, pricey fabrics and large hats juxtapose with the harsh conditions of the factories in which the garments were made. Immigrant laborers often worked 14-hour days for less than $2 a day.
The remarkable story of how a railroad was built connecting California to the East.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
The internationally famous carnival of delights in New York was the birthplace of the hot dog and the roller coaster.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
The inspiring story of the modern environmental movement.
The contradictory history of a dam that became a statement of American power and prestige.
The effort of pioneering researchers to conceive babies through in vitro fertilization.