The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
A personal story of one family's dramatic effort to hold onto their family farm in Iowa as massive foreclosures sweep the nation in the 1990s.
In September 1959, Soviet Premier Nikita Khrushchev made an unprecedented visit to America, creating a media circus as he traveled from coast to coast.
The first man to fly across the Atlantic, Charles Lindbergh was unprepared for the attention, particularly after his son was kidnapped.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
In the decade after the Civil War, former slaves sing their way into a nation's heart with spirituals, the religious anthems of slavery.
The staggering death tolls of the Civil War permanently altered the character of the republic and the psyche of the American people.