During the Great Depression, Americans built the Hoover Dam, overcoming technical challenges to erect one of the greatest engineering works in history.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
The impact of tuberculosis in America, once the deadliest killer in human history.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
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.
Meet the genius engineer and inventor whose technology helped create our wireless world.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.