First Earth Day: April 22, 1970, NBC News
A look at different demonstrations and celebrations of the first Earth Day, April 22, 1970 from around the country. The clip ends with a quote from Jay Murray Mitchell of the American Geophysical Union who warned (in 1970) of increasing levels of pollution which could lead to a greenhouse effect within the next 200 years and extensive global flooding caused by the melting of the Arctic Ice cap. Continue reading