While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The remarkable story of mid-19th century ingenuity and perseverance during the laying of the transatlantic telegraph cable between North America and Europe.
The impact of tuberculosis in America, once the deadliest killer in human history.
Politics, culture, race relations, and technology in a year of change.
The contradictory history of a dam that became a statement of American power and prestige.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.