Let's look how people pressured local governments to make local industry think about the environment.
Let's look how people pressured local governments to make local industry think about the environment.
The Cuyahoga River in Ohio would catch on fire due to pollution often.
A fish begs President Lyndon B. Johnson for help.
President Nixon and Canadian Prime Minister signing the agreement to fight Great Lakes pollution.
American and Canadian areas part of the Great Lakes watershed.
Map tracking ozone depletion from 1979-2011. Blue and purple means there is less protective ozone in the air.