1970 in the environment

This is a list of notable events relating to the environment in 1970. They relate to environmental law, conservation, environmentalism and environmental issues.

Events

 * The California Environmental Quality Act is passed into law.

January

 * The United States National Environmental Policy Act becomes effective.

February

 * US President Richard Nixon gave the nation's first presidential message on the environment.

April

 * The first Earth Day took place. Twenty million people participated in teach-ins in the United States.
 * US President Richard Nixon signed the Environmental Quality Improvement Act.

December

 * The United States Environmental Protection Agency is formed.
 * President Richard Nixon signed the Clean Air Act of 1970.