Go Green Auto and Lifestyle Fair, a hybrid auto show with factory reps on site to answer questions, 9am-3pm, free, 1200 block of Third Street Promenade, 310.393.8355.
Earth Day Celebration, crafts and storytelling, exhibits, and screening of documentary “Renewal,” 9am-noon, free, First United Methodist Church of Santa Monica, 1008 11th St., 310.393.8258.
Love Your Earth; Make it Green! Earth Day event presented by Santa Monica Women Business Retail Owners, music, prizes, fun, and environmental consciousness, 1-4pm, free, 2664 Main St., 310.488.6599.
Recycle Your E-Waste, a recycling fund-raiser for Castle Heights Elementary School’s Green Team. Items that will be accepted include obsolete monitors, televisions, computers, printers, copiers, fax machines, and cell phones, 8am-noon, free, school parking, 9755 Cattaraugus Ave., LA, 310.839.4528.
Splash! A Celebration of Mermaids and the Sea, a joint event of the Fowler Museum and Heal the Bay, with costume procession, entertainment, art workshops, food and vendor booths, face painting, exhibits, and a walkthrough “kelp forest,” 11:30am-3:30pm, free, Fowler Museum at UCLA, WW, 310.825.4288.
Ninth Annual Topanga Earth Day, with musical performers Pato Banton, Jesca Hoop, Maria’s Sacred Rhythm Experience, The Waybacks, Joseph Israel, and others, plus vendors, refreshments, yoga, beach cleanup, and more, 10am-sunset, $10, Topanga Community House 1440 N. Topanga Canyon Blvd., Topanga, topangaearthday.org.
Earth Day Party and Picnic, bring recyclable plates and utensils and empty ink cartridges or old cell phones to be recycled for fundraiser, 10am, free, Clover Park, 2600 Ocean Park Blvd., RSVP to http://environment.meetup.com/327/calendar/.
Baby2Baby presents an Earth Day event at the Treehouse Social Club, with DJ, raffle, arts and crafts, 2pm, 426 S. Robertson Blvd., LA, firstname.lastname@example.org.
Getting to Know Rachel Carson, talk about the pioneering ecologist, with Tara Treiber of the Santa Monica Aquarium, 6:30pm, free, Multipurpose Room, Santa Monica Main Library, 601 Santa Monica Blvd., 310.458.8600.
Earth Day Celebration at Kiehl’s with the first 50 patrons receiving a free Kiehl’s reusable canvas tote bag in return for bringing empty Kiehl’s bottles to the store for recycling, 10am-7pm, free, 1516 Montana Ave., 310.255.0055.
South Central Farm: Oasis in a Concrete Desert, film documentary on the South Central Farm by Sheila Laffey, 9:30pm, KLCS-TV, (Channel 58 or 15, check local listings).
Treesavers Earth Day Save the Trees March and Rally, gathering 5:30pm, march 6pm, The Children’s Tree of Life, Palisades Park, Ocean and Colorado Avenues, 310.399.1000.
Green Living Workshop, Wednesdays through May 28, 7pm, free, Multipurpose Room, Santa Monica Main Library, 601 Santa Monica Blvd., 310.458.8600.
Earth Under Fire: How Global Warming is Changing the World, lecture with photojournalist Gary Braasch, 11:15am, Room 214, Santa Monica College Arts Complex, SMC, 1900 Pico Blvd., 310.434.4303.
Green From The Ground Up, community forum on solar alternatives, 4-6pm, free, a private home in Malibu, RSVP to malibu.org.
The Santa Monica Bay, presentation by Heal the Bay, 7pm, free, Multipurpose Room, Santa Monica Main Library, 601 Santa Monica Blvd., 310.458.8600.
AltBuild Expo, exhibits of building, design, and landscaping materials and products, 10am-5pm, free, Santa Monica Civic Auditorium, 1855 Main St., 310.390.2930.
S. David Freeman, Los Angeles Harbor Commission President, signs his book Winning Our Energy Independence, 4pm, free, Café Milan and the Shallow Water Nature Store, Matilla Village Center, 221 Culver Blvd., Playa del Rey, 310.578.5888.
Green Gardens Tour, benefit for the Virginia Avenue Project, 10am-4pm, $25-$40, start garden: 1027 Princeton St., 310.264.4224.
Santa Monica Pier Aquarium Earth Weekend, workshops, arts and crafts, face painting, and more, 11am-6pm, $2, Santa Monica Pier Aquarium, 1600 Ocean Front Walk, healthebay.org.
Children’s Earth Day at STAR Eco Station, games, crafts, activities, healthy cuisine and live entertainment, 10am-4pm, $6-$8, STAR Eco Station, 10101 W. Jefferson Blvd., CC, 310.842.8060.