Michael Moorer claimed the heavyweight boxing title after smashing Evander Holyfield in Paradise, Nevada, US.
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Pyotr Ilyich Tchaikovsky composed his 'Swan Lake' ballet.
Twenty million Americans mobilized to call for greater protections for our planet. This became the world's first Earth Day.
The final gasps of the Crab Head nebula were observed as it went supernova.
Spain and Portugal signed the Treaty of Saragossa.
The US Congress passed legislation that allowed the 'In God We Trust' inscription on the currency.
