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Legendary Appleseed dies after spending his life planting trees through Indian and Ohio.
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A giant sequoia tree, the "Mother of the Forest," is cut down for carnival display. The 2,500 year old tree was 300 feet high.
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Chicago plans nation's first comprehensive sewer system.
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French professor Augustine Mouchot begins building solar energy machines.
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The U.S. government establishes the Department of Agriculture.
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The first of a series of 'killer fogs' hits London, caused by the city's overwhelming smog. Over 1,150 die.
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Chicago is the first city to regulate smoke discharges.