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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution.
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The day that the United States of America became an official country. -
The purchase of many states we have today such as Louisiana, Missouri, Arkansas, Iowa, North Dakota, South Dakota, Nebraska, and Oklahoma along with most of Kansas, Colorado, Wyoming, Montana, and Minnesota. -
Henry David Thoreau publishes Walden.
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Battle of Gettysburg was the battle between the North and South to fight for freedom. -
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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In 1929 the stock market had its first crash leading to the great depression. -
After the bombing of pearl harbor the U.S dropped the atomic bombs on Hiroshima and Nagasaki. -
The start and end of the Vietnam war / the U.S entered the war in 1965.
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Rachel Carson publishes Silent Spring.
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The Apollo 8 picture of Earthrise.
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After giving I have. dream speech MLK was shot and killed. -
The world trade center was under attack and destroyed on September 11th, 2001 -
The official Election of Donald Trump / put in office -
The official election of Joe Biden / put in office