The Natural Resources Defense Council, one of the nation's largest environmental advocacy groups, has a special package of resources for celebrating Earth Day 2010.
On April 22, 1970, some 20 million people across the country rallied to protest the state of the planet. Cleveland’s Cuyahoga River, a dump for steel mills and other industries, had caught fire. A massive oil spill swamped the coast off Santa Barbara, and concerns about smog, DDT and water pollution were rising. The very first Earth Day was a grassroots revolution that spurred Congress to create America’s core environmental protection laws, and continues to be a day of celebration and activism worldwide.