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 tale of oil-seeking mavericks whose risk-taking, sweat and dreams changed an American industry.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
The international race to develop biological weapons during the 20th century.
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.