AP Environmental Timeline


Agricultural Revolution

10000 B.C.

The Agricultural Revolution was the event that transitioned humans from hunting to gathering fruit/farming.

Industrial revolution

1760 - 1840

The Industrial Revolution was the event that transferred human to manufacturing.

John Muir birth and what he founded

April 21, 1838

John Muir founded the Sierra Club in 1892

Walden by Thoreau


Walden includes Thoreau's experiences over two years, two months, and two days about a cabin built near a pond.

Homestead Act

May 20, 1862

The Homestead Act was an act that provided any citizen that have never borne arms against the U.S. had over 150 acres of land.

Gifford Pinchot

1865 - 1946

Gifford was an American forester and the first Chief of the U.S. Forest Service

Yellowstone Park founded

March 1, 1872

A national park located in Wyoming, Montana, and Idaho.

American Forestry Association founded

September 1875

A non-profit conservation organization

Aldo Leopold

1887 - 1948

Aldo was an ecologist and is known for his book, "A Sand County Almanac"

General Revision Act


A Federal legislation that reversed previous acts because of faulty rules behind it

Sierra Club founded

May 28, 1892

The Sierra Club is on a mission to explore, enjoy, and protect the planet

Lacey Act

May 25, 1900

A conservation law in the U.S. that prevents trade of wildlife that have been illegally taken

Golden Age of Conservation

1901 - 1909

Theodore Roosevelt's personal goal to protect all the wildlife he could

First national wildlife refuge established

March 14, 1903

Pelican Island was the first National wildlife refuge in the U.S.

Audubon Society founded


Non-profit environmental organization dedicated to conservation

U.S. forest service founded

February 1, 1905

Part of Teddy Roosevelt's act to protect all living things.

Antiquities Act


Act passed by Teddy Roosevelt to prevent looting of archaeological and Native American structures

Antiquities Act


Act passed by Teddy Roosevelt to prevent looting of archaeological and Native American structures

U.S. National Park Service founded

August 25, 1916

An agency that manages all national parks

Dust Bowl

1930 - 1939

A period of time that severe dust storms that greatly damaged the ecology and agriculture

Civilian Conservation Corps founded

April 5, 1933

The CCC was a part of Teddy Roosevelt's New Deal legislation

Civilian Conservation Corps founded

April 5, 1933

The CCC was a part of Teddy Roosevelt's New Deal legislation

Migratory Bird Hunting Stamp Act


An act that requires each waterfowl hunter 16 years of age or older to possess a valid Federal hunting stamp

Taylor Grazing Act

June 28, 1934

A federal law that provides the regulation of grazing on public lands

Soil Conservation founded

April 27, 1935

An act that attempted to prevent the wastage of soil



Made to provide people with technological and economical aid

Silent Spring/Rachel Carson


An environmental science book

Clean Air Act

December 17, 1963

Federal law designed to control air polllution

Wilderness Act

September 3, 1964

The intent of Congress that we preserve and protect wilderness areas in their natural condition.

Wild and Scenic Rivers Act


Act created to preserve certain rivers with outstanding natural values

Cuyahoga RIver in Cleveland Ohio catching fire


A river was polluted by industrial waste and caught fire


January 1, 1970

Environmental law that promotes the enhancement of the environment

First Earth Day

April 22, 1970

The first Earth Day

Environmental Protection Agency established


Agency made to protect human health

Clean Water Act

October 18, 1972

An act designed to make sure everyone consumes clean water

Endangered Species Act


Act that provides the conservation of endangered species.

FIFRA - Federal, Insecticide, Fungicide, and Rodenticide Control Act


Law that set up pesticide regulation


October 21, 1976

Law that created the management for waste

Surface mining Control and Reclamation Act


An act made to stop most surface mining in order to protect the environment

CFC’s depleting ozone


Chlorofluorocarbons is depleting the ozone layer

Love Canal, Ny


A neighborhood built within Niagara Falls

3 mile island nuclear accident

March 28, 1979

A terrible nuclear failure

Alaskan Lands Act


Act made to protect Alaska's land


December 11, 1980

An environmental response act

Bhopal chemical toxic cloud


A gas leak incident


April 26, 1986

Nuclear accident

Montreal Protocol

January 1, 1989

An attempt to fix the ozone layer

Exxon Valdez

March 24 1989

An oil spill

Desert Protection Act


Act made to protect deserts

Kyoto Protocol

December 11, 1997

Treaty made to help climate change

World population hits 6 billion

October 2, 1999

World population hits 6 billion

Energy Policy Act

June 20, 2005

Act made to preserve energy