On This Day for April 18 - The midnight ride of Paul Revere, Albert Einstein is featured, and more

This message contains graphics. If you do not see the graphics, [click here to view](. April 18 [Einstein, Albert]( FEATURED BIOGRAPHY 1879 Albert Einstein [READ MORE]( [Revere, Paul]( FEATURED EVENT 1775 The midnight ride of Paul Revere [READ MORE]( Advertisement Advertisement [Explore Britannica's 100 Women Trailblazers]( MORE EVENTS ON THIS DAY [Dick Clark, 1996.] 2012: American television personality and businessman [Dick Clark]( who was the longtime host of American Bandstand (1957–87), died in California. [Gretzky, Wayne] 1999: Canadian [ice hockey]( player [Wayne Gretzky]( considered one of the game's greatest players, skated in his last [NHL]( game. [Rainier III, prince de Monaco; Grace, princesse de Monaco] 1956: Abandoning her Hollywood career, American actress [Grace Kelly]( wed [Rainier III, prince de Monaco]( in a civil ceremony; an opulent religious ceremony took place the following day. [Crowds watching the fires set off by the earthquake in San Francisco in 1906, photo by Arnold Genthe.] 1906: [San Francisco]( was rocked by an [earthquake]( caused by slippage along the [San Andreas Fault](. [Clarence Darrow, 1924.] 1857: American defense lawyer, public speaker, debater, and writer [Clarence Darrow]( whose high-profile court appearances was the [Scopes Trial]( in which he defended a Tennessee high-school teacher who had broken a state law by presenting the Darwinian theory of [evolution]( born. [Zimbabwe] 1980: [Zimbabwe]( achieved its independence from the [United Kingdom](. [SEE ALL EVENTS ON THIS DAY]( ALSO BORN ON THIS DAY 1963 [Conan O'Brien]( American talk-show host 1944 [Robert Hanssen]( American law enforcement agent and spy 1480 [Lucrezia Borgia]( Italian noble 1590 [Ahmed I]( Ottoman sultan 1772 [David Ricardo]( British economist 1927 [Samuel P. Huntington]( American political scientist [SEE ALL BIOS ON THIS DAY]( Advertisement FOLLOW: [Facebook]( [Twitter]( [YouTube]( To unsubscribe from Britannica e-mails, [click here](. Encyclopædia Britannica 325 N. LaSalle Street, Suite 200 Chicago, Illinois 60654 United States © 2019 Encyclopaedia Britannica, Inc. [Privacy Policy]( • [Help](