On April 22, 2009, people throughout the world will be celebrating the 40th anniversary of Earth Day, a day developed to bring awareness to issues surrounding sustainability and the protection of the Earth's natural resources.rnThe first Earth Day celebration was very effective at changing attitudes toward environmental issues.rnAccording to the Environmental Protection Agency, "Public opinion polls indicate that a permanent change in national priorities followed Earth Day 1970. When polled in May 1971, 25 percent of the U.S. public declared protecting the environment to be an important goal, a 2,500 percent increase over 1969."
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