Take a ride through the Panama Canal in this time-lapse video from 2010.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
Postwar New York City and the global economic order told through the story of the World Trade Center.
The evocative stories of teenage hoboes crisscrossing America on trains during the Great Depression.
A new religion called spiritualism affected the nation in the era of Abraham Lincoln, P. T. Barnum and Frederick Douglass.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
The impact of tuberculosis in America, once the deadliest killer in human history.