-
Period: to
Philadelphia committee led by Benjamin Franklin attempts to regulate waste disposal and water pollution
-
Period: to
Henry David Thoreau publishes Walden
-
Period: to
The term ecology is coined in German as Oekologie by Ernst Heinrich Philipp August Haeckel
-
Period: to
The term acid rain is coined by Robert Angus Smith in the book Air and Rain
-
Period: to
The term smog is coined by Henry Antoine Des Voeux in a London meeting to express concern over air pollution
-
Period: to
US Congress created the National Park Service
-
Period: to
Rachel Carson publishes Silent Spring
-
Period: to
The Apollo 8 picture of Earthrise
-
Period: to
Earth Day – 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
-
Period: to
Montreal Protocol on substances that deplete the ozone layer entered into force
-
Period: to
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
-
Period: to
U.S. rejects the Kyoto Protocol
-
Period: to
U.S. announces it will cease participation in the Paris Agreement on climate change mitigation
-
Period: to
U.S. announces it will rejoin the Paris Agreement on climate change mitigation