In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.
Politics, culture, race relations, and technology in a year of change.
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
It was the deadliest workplace accident in New York City’s history.
A Utah farm boy builds a prototype for a television, but is thwarted by movie studio executives wanting to control the technology.