Earth Day, which has been celebrated on April 22 for over 40 years, is an annual day of environmental awareness, education and activism. Started by a U.S. senator in 1970, Earth Day is now observed in nearly 200 countries.

Here are a few interesting facts about Earth Day:
Until the early 1960s, the environment was not high on most people’s political agendas or priority lists. In 1965, in fact, only 17% of Americans cited cleaning up our air and water as one of their top three political priorities. All of this began to change, however, when Wisconsin Senator Gaylord Nelson gave environmental politics back to the people.
Nelson had been working for several years to bring the environment into the political limelight in Washington, but to no avail. In 1969, he realized that when the people are passionate about a cause, the government gets behind them, and not the other way around. He had been trying to shed light on the issue through politicians, but by switching tactics and inspiring grassroots movements around the nation instead, he got a lot more done.
The late ‘60s saw student groups especially powerful to bring about awareness and change. Anti-war “teach-ins” – public, practical, action-oriented, educational forums – were being held regularly on campuses across the nation, and they had proven very effective. Senator Nelson took this idea and, in Seattle on September 20, 1969, announced a huge grassroots demonstration on behalf of the environment that would take place the following spring.
The media spread the idea like wildfire, the people did not disappoint, and on April 22, 1970, an estimated 20 million Americans held Earth Day events across the nation. Furthermore, in 1970, the percentage of Americans who cited cleaning up our air and water as one of their top three political priorities had jumped to a whopping 53%.
Nelson was understandably pleased with the success of Earth Day, but he never intended it to be an annual event. He thought that getting environmental issues into the spotlight once in a big way was enough to spark lasting political change, but the people had invested themselves so wholeheartedly in the cause that local Earth Day events have been held ever since.
There are probably local Earth Day events you can attend in your community, and the Earth Day Network’s website can direct you to them. Or, if you want to host your own event, grab a few friends and make it happen.
Earth Day started because of people doing just that, and it continues today because folks still care enough to organize activities in their communities.