A range of technological advances make the Apollo 11 moon landing successful.
The dropping of the atomic bomb on Hiroshima caps three years of research and innovation.
A U-2 spy plane incident fuels a Cold War crisis and escalates an arms race.
On Valentine's Day, 1929, Al Capone's thugs murder seven members of a rival gang.
A cow knocks over a lantern, sending 1871 Chicago into flames.
Miners become trapped underground and struggle to stay alive against a rushing river and rising waterline.