The Royal Opera House opened at Covent Garden, London, England.
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Inventor Leo Baekeland patented the first thermosetting plastic, Bakelite, which sparked the birth of the plastics industry.
Thomas Edison demonstrated his phonograph to the editors of 'Scientific American.'
Delaware became the first state to ratify the US constitution.
Apollo 17 launched the final manned lunar landing mission, during which the crew took the famous 'blue marble' photo of the entire Earth.
Coca-Cola was named the world's largest plastic polluter by the charity 'Break Free From Plastic.'
