On this day: February 18

POSTED: 5:45 AM Feb 17 2013   UPDATED: 2:00 AM Feb 18 2015

Jefferson Davis becomes the president of the Confederacy, Pluto is discovered, a cow flies, the first Church of Scientology is formed, the Chicago Seven are found not guilty, and Dale Earnhardt dies at the Daytona 500, all on this day.

OTD February 18 - Serena Williams
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2013: Tennis player Serena Williams becomes the Women's Tennis Association's world No. 1 for the sixth time in her career. By regaining the ranking at the age of 31, she became the oldest No. 1 player in WTA history. She retained the No. 1 ranking throughout 2013 and 2014 and into 2015, raising the record to age 33.