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Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution. -
Henry David Thoreau publishes Walden -
The term ecology is coined in German as Oekologie by Ernst Heinrich Philipp August Haeckel -
The term acid rain is coined by Robert Angus Smith in the book Air and Rain -
The term smog is coined by Henry Antoine Des Voeux in a London meeting to express concern over air pollution -
US Congress created the National Park Service -
The first rocket to reach the edge of space -
First artificial satellite -
First dogs were sent to space -
First manned flight -
Rachel Carson publishes Silent Spring -
First woman in space -
First artificial satellite around the moon -
The Apollo 8 picture of Earthrise -
First human 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 -
first space station -
first photograph of venus from space -
first photograph of the entire solar system -
Montreal Protocol on substances that deplete the ozone layer entered into force -
The Kyoto Protocol was negotiated in Kyoto, Japan in December. Countries commit to reduce their emissions of carbon dioxide. -
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. rejects the Kyoto Protocol
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U.S. announces it will cease participation in the Paris Agreement on climate change mitigation -
U.S. announces it will rejoin the Paris Agreement on climate change mitigation