Frenchman Henri Fabre flew the world’s first seaplane in Martinique, France.
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The strain of swine flu known as H1N1 had its first case in the US.
The Vienna Philharmonic Orchestra performed its first concert.
The term ''Big Bang" was coined by Fred Hoyle in a radio interview.
The world's first weightlifting championship took place in London, England.
The world's largest dinosaur footprint was discovered.
