Angelene Forester remembers Walter Freeman's first patient -- her mother Ellen Ionesco.
"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.
George Eastman introduced the Kodak and Brownie camera systems and transformed photography into something anybody could do.
A brilliant scientist, Oppenheimer was tasked with the development of the atomic bomb during World War II.
The impact of tuberculosis in America, once the deadliest killer in human history.
The dramatic story of the nation's first subway
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
The U.S. and the Soviet Union race to build the hydrogen bomb during the Cold War, thus beginning the nuclear arms race.