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On April 22, 1970, 20 million people in cities and towns all over the United States gathered to demonstrate their support for protecting the earth. Over the last 40 years, the movement has grown, with up to 184 countries participating. As a result of this grass roots activism, many important laws have been passed including the Clean Water Act and the Endangered Species Act. The impact of that first Earth Day touches our lives everyday.

To celebrate this remarkable anniversary, PBS and CET are celebrating with special programming, videos, materials and resources.

Earth Day Programs on CET

NATURE: FROGS - THE THIN GREEN LINE NATURE: FROGS - THE THIN GREEN LINE
Sunday, April 18, 8pm

Large-scale die-offs of frogs around the world have prompted scientists to take desperate measures to try to save whatever populations they can.
AMERICAN EXPERIENCE: EARTH DAYS AMERICAN EXPERIENCE: EARTH DAYS
Monday, April 19, 9pm

Director Robert Stone traces the origins of the modern environmental movement through the eyes of nine Americans who propelled the movement from its beginnings in the 1950s.

AMERICAN EXPERIENCE will host a premiere broadcast of this film on Facebook.

NOVA: THE BIG ENERGY GAMBLE NOVA: THE BIG ENERGY GAMBLE
Tuesday, April 20, 8pm

NOVA examines California's aggressive pursuit of a sustainable energy future.
A SENSE OF WONDER - Rachel Carson A SENSE OF WONDER
Tuesday, April 20, 9pm

A SENSE OF WONDER is a documentary-style film depicting pioneering environmentalist Rachel Carson, author of controversial book Silent Spring, in the final year of her life. Struggling with cancer, Carson recounts with both humor and anger the attacks by the chemical industry, the government and the press as she focuses her limited energy to get her message to Congress and the American people.
POV: FOOD, INC. POV: FOOD, INC.
Wednesday, April 21, 9pm

As recounted in this sweeping, shockingly informative documentary, sick animals, environmental degradation, tainted and unhealthy food and obesity, diabetes and other health issues are only the more obvious problems with a highly mechanized and centralized system, like America's, that touts efficiency as the supreme value in food production.
INDEPENDENT LENS: DIRT! THE MOVIE INDEPENDENT LENS: DIRT! THE MOVIE
Sunday, April 25, 11pm

Traveling around the world, ''DIRT! The Movie'' delves into the fascinating history of this lowly substance and shows how its mistreatment can result in natural disasters.

Watch videos on CETconnect

Nellis Solar Power PLant photovoltaic power Discover what's new -- and what's practical -- in solar energy. Also, programs that offset the cost of installing this technology in our homes.
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FOCUS: BEING GREEN IN CINCINNATI FOCUS explores the Green Cincinnati Recycling Plan which has a goal of increasing recycling to make Cincinnati healthier.
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Test the Waters: Action This CET Learning Services project has information on what you can do today and in the future to keep our water supply clean and healthy.
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Tyshshawna Choate and Lakennya Phillips recycling for Aiken University High School Sue Magness, Education Specialist for Hamilton County Environmental Services, Kim Thompson, teacher at Aiken University High School and a member of Aiken's Green Team discuss how schools can successfully participate in recylcing programs.
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Cincinnati Parks - Living Our Green Llife Gerald Checco from the Cincinnati Parks gives simple steps you can take to have a greener home. This interview touches on the highlights of the first of the Cincinnati Parks new lecture series Living Our Green Life.
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Going Green at the Zoo Mark Fisher, Senior Director of Facilities and Planning at the Cincinnati Zoo, shows us the latest green features at the Cincinnati Zoo and Botanical Garden, including a green roof, rain gardens and LEED certification.
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Frog Bog at the Newport Aquarium Ric Urban, Curator of Birds and Mammals at the Newport Aquarium, explains why frogs and toads are facing serious threats to their survival.
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Dysart Woods Where in Ohio can you the beauty of nature as it existed before our country was founded? Where in Ohio can you find oak trees that are hundreds of years old? The answer is Dysart Woods State Park, a 50-acre virgin forest and national natural landmark.
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Our Ohio - Corn to Plastics Petroleum, a natural resource that's the primary material in plastics, is a victim of skyrocketing prices, diminishing supplies and something that increases pollution. Work is underway to create plastic in a new way, with corn. Here's where -- and how -- this is happening in Ohio.
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