Did you know that the world's largest Earth Day event is right here in San Diego? That's right! On Sunday, April 22nd, the 23rd annual Earthfair Earth Day event will be happening at Balboa Park. From 10am-5pm check out the eARTh gallery with eco-friendly art, learn about sustainable businesses in the exhibitor area, participate in the children's earth parade, and view fuel efficient vehicles. There will tons of fun activities for all ages, and best of all, it's free!