Oklahoma’s most ambitious Earth Day Celebration finds OK Roots Music teaming with the Sierra Club, Tulsa Earth Coalition, Carrie Dickerson Foundation and other environmental and arts organizations to host prominent environmental speakers, educational booths & demos, music and arts performances, youth activities, farm-to-table cuisine and more. Saturday’s big event is free at Tulsa’s Guthrie Green, an award-winning urban park utilizing solar and geothermal power. With satellite events at Ahha and other Tulsa Arts District venues. Stay tuned!