The historic bohemian enclave of Topanga pays homage to Mother Earth at the 12th Annual Topanga Earth Day, a three-day community festivity. The emphasis is on sustainability, with a gallery of ecological artists, information on biodegradable and sustainable solutions, composting, water conservation and native plants. Additional perks include organic food and drink, live music and a free bio-diesel shuttle. Topanga Community House Fair Grounds, 1440 N. Topanga Canyon Blvd., Topanga. 10 a.m.-Sunset. Fri.-Sun. Free. http://www.topangaearthday.org.