On this day: April 10

POSTED: 09:21 AM MDT Apr 08, 2013    UPDATED: 12:00 AM MDT Apr 10, 2014 
China-USA ping-pong diplomacy, 1971

The first Arbor Day is celebrated, the Titanic sets sail, "The Great Gatsby" is published, Paul McCartney quits The Beatles, and the U.S. and China engage in "ping-pong diplomacy," all on this day.