The first WHSmith railway bookstore opened at London Euston Railway Station, London, UK.
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Jankenteam's Alex Kidd in Miracle World was released in Japan for the Sega Master System.
Palau's archipelago became the first country in the world to ban the use of sunscreen containing harmful chemicals that destroy reefs.
The Maastricht Treaty came into effect, and with it, the European Union was formed.
The first known performance of William Shakespeare's 'Othello' occurred at Whitehall Palace, London.
A leak at a chemical factory in Basel, Switzerland, caused the Rhine to turn red.
