Each year, Earth Day—April 22—marks the anniversary of the birth of the modern environmental movement in 1970. The first year of our Earth Day celebration gave voice to an emerging consciousness, channeling human energy toward environmental issues. Forty-six years later, we continue to inspire, challenge ideas, ignite passion, and motivate people to action.

The idea for a national day to focus on the environment came to Earth Day founder Gaylord Nelson, then a U.S. Senator from Wisconsin, after witnessing the ravages of the 1969 massive oil spill in Santa Barbara, California

On April 22,1970, 20 million Americans took to the streets, parks, and auditoriums to demonstrate for a healthy, sustainable environment in massive coast-to-coast rallies. Thousands of colleges and universities organized protests against the deterioration of the environment. Groups that had been fighting against oil spills, polluting factories and power plants, raw sewage, toxic dumps, pesticides, freeways, the loss of wilderness, and the extinction of wildlife suddenly realized they shared common values.

Earth Day 1970 achieved a rare political alignment, enlisting support from Republicans and Democrats, rich and poor, city slickers and farmers, tycoons and labor leaders. By the end of that year, the first Earth Day had led to the creation of the United States Environmental Protection Agency and the passage of the Clean Air, Clean Water, and Endangered Species Acts. “It was a gamble,” Gaylord recalled, “but it worked.”

As 1990 approached, a group of environmental leaders asked Denis Hayes to organize another big campaign. This time, Earth Day went global, mobilizing 200 million people in 141 countries and lifting environmental issues onto the world stage. Earth Day 1990 gave a huge boost to recycling efforts worldwide and helped pave the way for the 1992 United Nations Earth Summit in Rio de Janeiro. It also prompted President Bill Clinton to award Senator Nelson the Presidential Medal of Freedom (1995)—the highest honor given to civilians in the United States—for his role as Earth Day founder.

Earth Day is more than just a single day — April 22, 2016. It’s bigger than attending a rally and taking a stand.  This Earth Day and beyond, let’s make big stuff happen. Let’s plant 7.8 billion trees for the Earth. Let’s divest from fossil fuels and make cities 100% renewable. Let’s take the momentum from the Paris Climate Summit and build on it.

– See more at: http://www.earthday.org/about/the-history-of-earth-day/