Test Your Earth Day Knowledge

The movement was effective and politicians responded to protect the environment by founding the EPA in December 1970.

In 1985, the hole in the ozone layer was discovered. This was a significant scientific finding that brought attention to the depletion of the ozone layer, which protects the Earth from harmful ultraviolet radiation. The discovery led to international efforts to reduce the production and use of ozone-depleting substances, such as chlorofluorocarbons (CFCs), and the implementation of the Montreal Protocol in 1987. This protocol aimed to phase out the production and use of these substances, leading to a gradual recovery of the ozone layer in subsequent years.

The Spring Equinox Earth Day event began in San Francisco on March 21, 1970 because conservationist John McConnell believed in equilibrium and balance.

The Three Mile Island accident in Pennsylvania took place on March 28, 1979 when the nuclear power plant suffered a partial meltdown and released small amounts of radioactive gasses into the environment.

Gaylord Nelson, a Democratic Senator from Wisconsin, was inspired by anti-Vietnam 'teach-ins' that took place on colleges and wanted a similar movement supporting the federal government.

"Acts of Green" are pledges that people make about things they will do for the environment. You can submit your "Act of Green" here: http://act.earthday.org/

In 1990, Earth Day had a significant increase in participation compared to its inception 20 years prior. Approximately 75 million people participated in Earth Day in 1990, demonstrating the growing awareness and concern for environmental issues. This large number signifies the success and impact of Earth Day in mobilizing individuals to take action and promote environmental sustainability.

Twenty million people across the U.S. took part in the first Earth Day by rallying and participating in activities that promoted a cleaner planet.