Dr. Alfred Crosby, author of Epidemic and Peace 1918: America's Forgotten Pandemic.
The historic journey of Apollo 8 captivated the world in 1968 -- a bright spot in a year marked by political assassinations, race riots, and the Vietnam War.
The effort of pioneering researchers to conceive babies through in vitro fertilization.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
The dramatic story of the streamliners is one of remarkable achievements and opportunities lost.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
The remarkable story of how a railroad was built connecting California to the East.
The international race to develop biological weapons during the 20th century.