April 22, better known as Earth Day, is always a time to honor Iowa State's many sustainability initiatives, organizations and accomplishments. The event features interactive displays from sustainability-focused student, campus and community organizations and businesses, as well as free bike tune-ups, refreshments and the opportunity to take part in the Live Green! Earth Day Challenge to earn unique and sustainable prizes. Earth Day is part of Earth Week, an exciting time when student organizations sponsor a number of on-campus activities. There are also many other Earth Month events at Iowa State and in the Ames community throughout April.
In 1970, two separate individuals created the concept of Earth Day: peace activist John McConnell, who hosted an Earth Day celebration during the Spring Equinox on March 21, 1970, with help from the United Nations; and U.S. Senator Gaylord Nelson, who hosted an Earth Day celebration on April 22, 1970, which more than 20 million Americans participated in. Nearly 50 years later, this beloved holiday is coordinated by the Earth Day Network and celebrated by more than one billion people in 192 countries across the world.