Today in 1883: The United States and Canada adopt a system of standard time zones: http://t.co/jcCDySfpWi— amhistorymuseum (@amhistorymuseum) November 18, 2013 Today in 1883 four standard time zones were introduced for the U.S. at the…

Portrait by Anthony Berger/Wikimedia Commons. Professor Christopher Oakley says he has spotted President Abraham Lincoln in a 150-year-old photograph of the crowd at the Gettysburg Address, a discovery that could be one of the most significant in recreating…