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Pennsylvania colony governor William Penn ordered colonists to conserve one tree for every five cut down.
Pennsylvania colony governor William Penn ordered colonists to conserve one tree for every five cut down. -
Sierra Club
Save Yosemite national park from intruders and other animals or pests -
Lacey Act
The Lacey Act prohibited the transport of illegally obtained wildlife across state lines, and outlawed hunting in Yellowstone National Park -
Missouri v. Illinois
Missouri filed suit against Illinois to stop polluting the Mississippi River with waste from the city of Chicago. The U.S. Supreme Court ruled in favor of Illinois, thereby allowing the City of Chicago to continue draining city sewers into neighboring rivers. -
New York v. New Jersey
New York sued New Jersey commissioners to stop dumping sewage in the New York harbor -
Salt lake pollution
Stopping air pollution in Salt Lake city -
Bald Eagle Preservation Act
Congress passed the Bald Eagle Preservation Act to prevent the extinction of the national symbol. -
The First Earth Day
The first Earth Day was celebrated by 20 million people across the country.To clean up earth. -
Nasa
Nasa Warned Congress about global warning -
San Francisco Oil Spill
South Korea bound container ship struck a tower supporting the San Francisco-Oakland Bay Bridge spilling 58,000 gallons of oil in the San Francisco Bay. Dozens of dead and injured seabirds were immediately found following the spill
