On this day in 1926, the crew of the airship Norge, led by Roald Amundsen, became the first people to make a verified trip to the North Pole.
On this day in 1958, Canada and the United States signed a formal agreement establishing the North American Air Defense Command to provide aerospace warning and defense for North America.
On this day in 2008, a powerful earthquake with a magnitude of 8.0 on the Richter scale struck Sichuan, China, killing over 69,000 people.