It has been 41 yearssince the late Wisconsin Sen. Gaylord Nelson launched the first nationwide grassroots demonstration on behalf of the environment, known as Earth Day. The event was actually a national "teach-in" about environmental causes, and it is widely considered the spark that ignited the modern environmental education movement. Within months, President Nixon passed the National Environmental Education Act, and a new subject was introduced into the curricula of K-12 schools across the country.
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