Ever wondered what history would have been like if Twitter were around? We did. Here's a look back in history – in 140 characters or less.
Russian physiologist Ivan Pavlov researches classical conditioning by ringing a bell for a dog, then rewarding said dog with a treat.
Christopher Columbus sets sail, heading west for Asia, 1492.
Noah's Ark, during the biblical flood of 2348 BC.
Reports surface that a UFO crash-landed in Roswell, New Mexico, 1947.
The first college social fraternity, Kappa Alpha, forms at Union College in Schenectady, New York, 1825.
Julius Caesar escapes defeat in Macedonia, 46 BC.
The world population hits 5 billion, 1987.
Elvis Presley, then 19, quits his job as a truck driver and signs a one-year record contract with Sun Records, 1954.
England bans kissing to stop germs from spreading, 1439.
Baseball has its first no-hitter, 1876.
The legend of the Pied Piper of Hamelin leading rats out of town is said to have occurred, 1376.
Abraham Lincoln is assassinated watching Our American Cousin at Ford's Theatre, 1865.
Teamsters president Jimmy Hoffa convicted of fraud & conspiracy, 1964.
Leonardo da Vinci unsuccessfully tests a flying machine in 1496. The Wright Brothers complete the first aircraft flight, 1903.