On this day: January 10

Published On: Jan 09 2013 01:35:09 PM EST   Updated On: Jan 10 2013 02:00:00 AM EST
Wendy's 'Where's the Beef' commercial

Caesar crosses the Rubicon, the London Underground opens, RCA introduces the 45 rpm single, The Beatles' first U.S. record is released, and Wendy's asks "Where's the Beef?," all on this day.