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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution.
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Simón José Antonio de la Santísima Trinidad Bolívar Palacios Ponte y Blanco is named ruler of Peru.
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The Chumash Revolt of 1824 begins on February 21st, 1824. It sees native American forces fight against Spanish and Mexican occupiers of the ancestral lands in what is now California.
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The State of Florida moves its capital city to Tallahassee from St. Augustin
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Lord Byron, the famed British poet, perishes in Greece at age 36. "not in combat, but of a fever caught in the unhealthy conditions at Missolonghi... exacerbated, it is generally agreed, by the over-zealous actions of his doctors, who bled him excessively."
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Ludvig van Beethoven's Symphony no. 9 premiers in Vienna, forever changing the path of music students trying to learn an instrument.
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The Royal Society for the Prevention of Cruelty to Animals is established in Great Britain
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Queen Kamāmalu of Hawaii dies of measles while in the United Kingdom.
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King Kamehameha II of Hawaii dies of measles while visiting Great Britain, mere days after the death of the Queen.
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Charles X succeeds Louis XVIII for the French crown
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The Chi Phi (ΧΦ) fraternity is founded at Princeton University.
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Henry David Thoreau publishes Walden
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The term ecology is coined in German as Oekologie by Ernst Heinrich Philipp August Haeckel
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The term acid rain is coined by Robert Angus Smith in the book Air and Rain
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The term smog is coined by Henry Antoine Des Voeux in a London meeting to express concern over air pollution
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US Congress created the National Park Service
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Rachel Carson publishes Silent Spring
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The Apollo 8 picture of Earthrise
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US Environmental Protection Agency established
First Earth Day – April 22. Millions of people gather in the United States for the first Earth Day. -
Montreal Protocol on substances that deplete the ozone layer entered into force
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The Kyoto Protocol was negotiated in Kyoto, Japan in December. Countries commit to reduce their emissions of carbon dioxide
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U.S. rejects the Kyoto Protocol
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U.S. announces it will cease participation in the Paris Agreement on climate change mitigation
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U.S. re-enters Paris Agreement.