Earth Day Fast FactsBy CNN LibraryUpdated 1524 GMT (2324 HKT) November 6, 2014Here's a look at what you need to know about Earth Day, which is celebrated every year by more than a billion people in 180 nations around the world.The 45th Anniversary of Earth Day will be celebrated on April 22, 2015.Facts:Earth Day is celebrated every April 22, but some events take place on the weekends before or after the 22nd.It was created in the United States to increase public awareness of environmental problems and is now celebrated around the world.Earth Day is credited with starting the environmental movement in the United States.Timeline:September 1969 - Sen. Gaylord Nelson (D-WI) proposes the idea for a nationwide teach-in about the environment.April 22, 1970 - The first Earth Day takes place across the United States. Approximately 20 million people participate, taking to the streets and parks to demonstrate for environmental causes. 1970 - Congress creates the Environmental Protection Agency and passes the Clean Air Act.1990 - The twentieth anniversary of Earth Day sparks renewed interest and an increase in activities and participation.1995 - Sen. Nelson is awarded the Presidential Medal of Freedom for his role as Earth Day founder and his work on other environmental issues.April 22, 2007 - Activists rally on Capitol Hill for drastic cuts in greenhouse gas emissions - 80% below 1990 levels by 2050. March 23, 2010 - Congress introduces a resolution commemorating the 40th anniversary of Earth Day and honoring its founder.Earth DayA golf club with more eagles than mostEagles may be thin on the ground for most golfers at the Bear Trace course at Harrison Bay. But up in the treetops, it's a different matter.Opinion: As nuclear power dies, solar risesAt long last, this Earth Day we celebrate the true dawn of the Solar Age. Clean, green dining for Earth DayApril 22 is Earth Day, and there's no better way to start celebrating and protecting the planet than by taking a closer look at what's on your plate.Opinion: Want green cities? Lose the carsDo yourself and everybody else a favor and stop driving your car in town. Really -- who needs it? 15 of nature's most spectacular showsFireworks are fantastic and human endeavor has its place, but sometimes Mother Nature outshines any performance we can produce. Hey Earthling, it's Earth Day; time for a quizThere's a popular saying about our planet and humankind's negative effects on its ecology: 7 stunning U.S. spots for wildlifeHere are some of the best places on earth to spot incredible wildlife.What to know about Earth DayHere's a look at what you need to know about Earth Day, which is celebrated every year by more than a billion people in 180 nations around the world.Celebs saving the planetBrad Pitt is just one of many celebs who've taken a stand or taken a chance to change the way the we power the planet. Terrariums make it big by going smallIt's not gardening the way most know it -- the people sifting through air plants, succulents and clumps of moss, often between glasses of wine.More from usLaGuardia runway reopens after Delta flight skids off itPolicing for profit: How Ferguson's fines violated rights of African-AmericansCould this prevent airplane accidents on the runway?