The remarkable story of how a railroad was built connecting California to the East.
The grave truth behind modern forensics was discovered in 1920s New York.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
The international race to develop biological weapons during the 20th century.
The most daring and innovative accomplishment at the turn of the 20th century.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
Robert Noyce's invention of the microchip launched the world into the Information Age.
The remarkable story of mid-19th century ingenuity and perseverance during the laying of the transatlantic telegraph cable between North America and Europe.