In celebration of the 40th anniversary of Earth Day, several prominent musicians are joining forces at an event at the National Mall in Washington D.C. on Sunday, April 25.

After nine days of advocacy events and exhibits, the final day of festivities at the National Mall will feature a host of legendary musicians from contemporary artists like The Roots, John Legend and Q-Tip to Sting, the Grateful Dead's Bob Weir, Booker T. Jones and Mavis Staples who will encourage Congress to pass clean-energy legislation to protect the environment.

Additional musical events in support of Earth Day will be held around the country, featuring Ben Harper and Alberta Cross in Alpharetta, Georgia, the Indigo Girls in Sheboygan, Wisconsin and Jack Johnson at his own annual environmental benefit concert, the Kokua Festival at Waikiki Shell in Honolulu, Hawaii on Friday and Saturday, which also boasts performances by Ziggy Marley and Taj Mahal.

Earth Day was launched by former Wisconsin Senator Gaylord Nelson, on April 22, 1970, in an attempt to create awareness about environmental concerns. The event has since gone global, with a week of festivities and eco-friendly activities focusing on conservation of our environment and clean-energy. For more information on The Climate Rally and further daily events, visit