P. T. Barnum and his circus start their first tour of the United States.
1 June 1974
The Heimlich maneuver for rescuing choking victims is published in the journal Emergency Medicine
31 May 2008
Usain Bolt breaks the world record in the 100m sprint, with a wind-legal (+1.7 m/s) 9.72 seconds
29 May 1914
The Ocean liner RMS Empress of Ireland sinks in the Gulf of Saint Lawrence with the loss of 1,012 lives
28 May 1999
In Milan, Italy, after 22 years of restoration work, Leonardo da Vinci’s masterpiece The Last Supper is put back on display.
26 May 1998
The first “National Sorry Day” is held in Australia. Reconciliation events are held nationally, and attended by over a million people.
25 May 2011
Oprah Winfrey airs her last show, ending her 25-year run of The Oprah Winfrey Show.