Christmas tree lights are born, the Lincoln Tunnel opens, Alvin and The Chipmunks hit No. 1, the "Shoe Bomber" tries to take down a transatlantic flight, and "Don't ask, don't tell" is repealed, all on this day.
Beethoven is born, the colonials enjoy a tea party in Boston, the Battle of the Bulge begins, Jimi Hendrix releases his first single, and MTV premieres Nirvana's "Unplugged" performance, all on this day.
Have you ever wondered where the tradition of putting up a tree for Christmas came from? Or why we light a menorah for Hanukkah? Find out about the interesting origins of many holiday traditions right here.
As the nation struggled to make sense of the mass shooting that took place at Sandy Hook Elementary School in Newtown, Conn. on Dec. 14, 2012, many took to Twitter to share condolences, prayers and opinions. Take a look back at the tweets shared that day.