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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution.
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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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It was a day when the U.S. troops started to take the fight to Hitler landing on the beaches in Normandy, France to launch a massive assault with help from the allied powers.
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Rachel Carson publishes Silent Spring.
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It was the fateful day that John Kennedy was killed by Lee Harvey Oswald in his car at Dealey Plaza in Dallas, Texas.
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The Apollo 8 picture of Earthrise.
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It was the day Martin Luther King Jr. was killed at Lorraine Motel in Memphis, Tennessee.
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It was the day that Senator Robert Kennedy was killed after he was done delivering a speech at the Ambassador Hotel in Los Angeles, California.
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April 22., millions of people gather in the United States for the first Earth Day organized by Gaylord Nelson, former senator of Wisconsin, and Denis Hayes, Harvard graduate student. US Environmental Protection Agency established
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4 students at Kent State University were gunned down by the national guard in a protest against the Vietnam war.
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Operatives of president Richard Nixon broke into the Democratic headquarters of the Watergate office building in Washington, D.C.
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After many failures and the Watergate Scandal President Richard Nixon resigned before he could be kicked out of office.
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Ronald Reagan had an attempted assassination on him by John Hinckley Jr. and survived the ordeal to get back to office.
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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 that ratify this protocol commit to reduce their emissions of carbon dioxide and five other greenhouse gases.
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Bill Clinton after all his scandals was the second president in United States history to be impeached after Andrew Johnson.
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U.S. rejects the Kyoto Protocol.
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This was the day that Osama Bin Laden carried out his plot and had hijackers nose dive plans into high value targets in the U.S.
