The first around-the-world air race was sponsored to prove that the airplane had a commercial future. Four pilots took off from Seattle and two returned 175 days later.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.
Accounting for America's most famous inventor and his role in America's future.
The impact of tuberculosis in America, once the deadliest killer in human history.
George Eastman introduced the Kodak and Brownie camera systems and transformed photography into something anybody could do.
The U.S. and the Soviet Union race to build the hydrogen bomb during the Cold War, thus beginning the nuclear arms race.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.