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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution.
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The Boston Massacre
A mob of colonists attacked British soldiers for their independence. -
The Declaration of Independence is Signed.
Signed by Thomas Jefferson, the Declaration of Independence separated America from Great Britain. -
George Washington is elected as the first President
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"The Star Spangled Banner" is Written.
The iconic song is written by Francis Scott Key. -
Henry David Thoreau publishes Walden
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13th Amendment Abolished Slavery
Slavery was abolished in the United States by former President Abraham Lincoln. -
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 Ford Model T appears on the Market.
The first known automobile was placed on the market by Henry Ford. -
US Congress created the National Park Service
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The United States enter World War I
The United States entered World War I after former President Woodrow Wilson wanted to "make the world safe for democracy". -
Japanese Attack on Pearl Harbor
The Japanese airships bombed multiple ships on Pearl Harbor which caused the United States to enter World War II. -
The Apollo 8 picture of Earthrise
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United States wins Space Race
The United States beat Soviet Russia in the Space Race by landing a man on the moon. -
First Earth Day – April 22. Millions of people gather in the United States for the first Earth Day. US Environmental Protection Agency established
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Montreal Protocol on substances that deplete the ozone layer entered into force
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Terrorist Attack (September 11th)
A terrorist attack was made on New York's Twin Towers alongside the World Trade Center on September 11th, 2001. -
U.S. announces it will cease participation in the Paris Agreement on climate change mitigation
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U.S. announces it will rejoin the Paris Agreement on climate change mitigation
