Ephraim Dolz Period 4 AP Environmental Science Timeline Project


Agricultural Revolution(8000 BCE)


It's really 8000 BCE

Industrial Revolution

1760 - 1840

John Muir

1838 - 1914

A famous influential naturalist and conservationist. He taught people the importance of experiencing and protecting our natural heritage.

Walden by Henry David Thoreau


Walden is a book about the experiences of Henry David Thoreau in a cabin over two years near Walden pond.

Homestead Act


The homestead act was a program that granted land to small farmers. It provided that any adult citizen who had a family was able to qualify for a grant of 160 acres of public land by paying a small registration fee.

Yellow National Park founded


American Forestry Associated founded


Yosemite + Sequoia National Park Founded


Sierra Club Founded


The Sierra Club was founded by John Muir in 1892 who was elected as president. It was created to defeat a reduction in the boundaries of Yosemite National Park.

Lacey Act


The Lacey Act is a United States law made in 1900 that bans trafficking in illegal wildlife.

Golden Age of Conservation (Theodore Roosevelt)

1901 - 1909

First national wildlife refuge established


The first national wildlife refuge established was Pelican Island by Theodore Roosevelt in March 14, 1903. This was created to protect birds from being extinct through plume hunting.

Gifford Pinchot


Gifford Pinchot was a politician and forester who served as the chief of United States Forest Service in 1905.

Aldo Leopold


Aldo Leopold was an American author, scientist, environmentalist who wrote a book "A Sound County Almanac." He and his family made their own ecological restoration experiment in Wisconsin where they planted thousands of plants, pine trees, and restored prairies.

U.S. Forest Service founded


The U.S. Forest Service is an agency that administers the nation's 154 national forests and 20 national grasslands. They have the authority to manage 192 million acres of national forests and grasslands.

Audubon Society Founded


The Audubon Society is an environmental organization that is dedicated to conservation. They use grassroots, education, and science advocacy to conserve.

Antiquities Act


The Antiquities Act was passed by the United States Congress to enable the president of the United States to create national monuments from public lands to protect scientific, natural, and or cultural features.

Congress became upset because Roosevelt was waving so much forest land so they banned further withdrawals.


U.S. National Park service founded


Dust Bowl

1930 - 1939

Civilian Conservation Corps Founded


The Civilian Conservation Corps was a public work relief program for unemployed, unmarried men from relief families. Their projects intended to promote environmental conservation and to help citizens through difficult labor

Soil Conservation Service Founded


The Soil Conservation Service is an agency that provides technical assistance
assistance to farmers and other private landowners and managers. It was founded by Hugh Hammond Bennett in 1933.

Migratory Bird Hunting Stamp Act


The Migratory Bird Hunting Stamp Act requires each hunter to possess a valid Federal hunting stamp. You must be 16 years of age or older.

Taylor Grazing Act


The Taylor Grazing Act is a law that allows grazing on public lands to improve range land conditions and regulate their use.

Fish + Wildlife Service Founded


The Fish + Wildlife Service is an agency of federal government that is dedicated the management of wildlife, fish. and natural habitats.

Silent Spring published by Rachel Carson


Silent Spring is a science book about the effects on the environment, mainly about birds. It accused the chemical industry of spreading disinformation.

Wilderness Act


The Wilderness Act which created the National Wilderness Preservation System, prohibits permanent roads and commercial enterprises.

Wild and Scenic Rivers Act


The Wild and Scenic Rivers Act was created by Congress to preserve rivers with cultural, natural, and recreational values in a free-flowing condition for the future.

NEPA (National Environmental Policy Act)


The National Environmental Policy Act is an environmental law that promotes the enhancement of the environment and established the President's Council on Environmental Quality.

Cuyahoga RIver in Cleveland, Ohio caught fire


The Cuyahoga River was a famous river in Northeast Ohio for being so polluted that it caught fire in 1969.

First Earth Day


Environmental Protection Agency Established


Clear Air Act Established


The Clear Air Act is a law designed to protect human health and the environment from the effects of air pollution.

OPEC and Oil Embargo


The OPEC and the Oil Embargo was a cartel that enforced an embargo in response to the Yom Kippur War between Egypt and Israel to limit the shipment of oil to the United States.

FIFRA-Federal, insecticide, fungicide, and Rodenticide Control Act


The Federal Insecticide, Fungicide, and Rodenticide Act is law that set up the basic U.S. system of pesticide regulation to protect applicators, environment, and the consumers.

Endangered Species Act


The Endangered Species Act provides for the conservation of species that are endangered or threatened and the conservation of the ecosystems on which they depend.

Roland and Molina (UCI) - CFC's and ozone announcement


Roland and Molina explained on how ozone is formed and decomposed through chemical process in the atmosphere in 1974. They also showed how sensitive the ozone layer is to the anthropogenic emissions of certain compounds.

RCRA (Resource Conservation and Recovery Act)


The Resource Conservation and Recovery Act is a law that regulates the management of hazardous waste, medical wastes, nonhazardous wastes, and underground storage tanks.

Clean Water Act


The Clean Water Act is a federal law in the U.S. governing water pollution. It restores and maintains the physical, chemical, and biological integrity of the nation's waters by preventing point and non point pollution sources.

Surface Mining Control and Reclamation Act


The Surface Mining Control and Reclamation Act is a federal law that regulates the environmental effects of coal mining in the United States. There are two programs that regulates active coal mines and reclaims abandoned coal mines.

Love Canal, NY (toxic waste leaks into residential houses)


The love Canal is a neighborhood within Niagara Falls. The Love Canal was disposed of 22,000 barrels of toxic barrels in 1978, which contaminated houses with chemicals and toxic waste.

Three Mile Island Nuclear Accident


The Three Mile Island Nuclear Accident was a partial nuclear meltdown that happened in March 28, 1979. It was a serious accident that had little radioactive releases, but it made radiation protection more aware to be more careful.

Alaskan Lands Act


The Alaskan Lands Act is a federal law that provided for 43,585,000 acres of new national park lands in Alaska. It was created to resolve the long-standing issues surrounding land claims in Alaska and to stimulate economic development in Alaska.

Bhopal, India (chemical toxic cloud)


On December 2, 1984, an accident occurred at the Union Carbide pesticide plant in Bhopal, India which released at least 30 tons of a highly toxic gas called methyl isocyanate and other gases.



The Chernobyl accident which happened in 1986, created an explosion and released radioactive particles into the atmosphere which spread around western Soviet Union and Europe. It killed 31 people and had long term effects.

CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act) [Superfund]


CERCLA is a Superfund that was created in response to some alarming and unacceptable hazardous waste practices and management. Its purpose is to identify sites where hazardous materials threaten the environment or public health.

Montreal Protocol


Montreal Protocol is a treaty designed to protect the ozone layer by phasing out the numerous substance that are responsible for ozone depletion.

Exxon Valdez


The Exxon Valdez oil spill occurred on March 24, 1986, when an oil tanker spilled 11 to 38 million US gallons of oil. This was the largest spill in United States waters until 2010.

Energy Policy Act of 1992


The Energy Policy Act is a United States government act that was passed by Congress which created mandates and amended utility laws to increase clean energy use and improve overall energy efficiency in the United States.

Desert Protection Act


The California Desert Protection Act of 1994 is a federal law passed by the U.S. Congress that established the Death Valley, Joshua Tree National Parks, and the Mojave National Preserve.

Kyoto Protocol

1997 - 2005

The Kyoto Protocol is an international treaty that commits State Parties to reduce greenhouse gas emissions. Their objective was to fight global warming by reducing greenhouse gas concentrations in the atmosphere.

World population hits 6 billion


IPCC Report on Climate Change

2007 - 2008

The IPCC Report on Climate Change is scientific and intergovernmental body under the auspices of the United Nations. Its task of providing the world with an objective, scientific view of climate change and its political and economic impacts.

Gulf Oil Spill


The Gulf Oil Spill happened on April 20, 2010, which created an explosion and sinking. A sea-floor oil gusher flowed for 87 day. Eleven people went missing and this was the largest accidental marine oil spill in history.

Nuclear Disaster in Japan


World population hits 7 billion