Children's Centennial at Chabot Space & Science Center. To honor Children's Hospital Oakland's 100 amazing years of care, the first 500 guests will receive a Children's Hospital First Aid Kit and Brown Bag Lunch Pocket Guide. 10 a.m. to 5 p.m. Sept. 15. Chabot Space & Science Center, 10000 Skyline Blvd., Oakland. General admission fees apply. 510-336-7373, www.chabotspace.org.
Truth about GMOs. Alarmed by the pervasive health risks of Genetically Modified Organisms in the American diet, leading consumer GMO advocate Jeffrey Smith and well-known author and environmentalist John Robbins have joined forces to present "Truth about GMOs." 3 to 5:15 p.m. Sep. 15. Laney College, 900 Fallon St., Oakland. $5-10 suggested donation. Free for students. 425-381-1986, foodpolicyfund.org.
Author Connie Rice. Connie Rice discusses and signs her new book, "Power Concedes Nothing," a hard-hitting memoir chronicling a fiercely dedicated woman's quest to win the first of all human rights: freedom from violence. 4:30 to 6:30 p.m. Sept. 18. Prevention Institute, 221 Oak St., Oakland. Free. 510-444-7738, preventioninstitute.org.
Library volunteer opportunities. Learn more about volunteering at Oakland Public Library when representatives from Second Start Adult Literacy, Books for Wider Horizons Preschool Story Reader Program, and Friends of the
Caring for native landscapes. Learn how to choose native plants, care for your own landscape, and get ideas on how to design a landscape using native plant communities, with speaker Dave Kaplow, an environmental planner and native plant restoration contractor. 7 p.m. Sept. 19. Dimond Branch Library, 3565 Fruitvale Ave., Oakland. Free. 510-501-3672, www.sausalcreek.org.
Author Anita Kobuszewski. "Food: From Farm to Fork," the new book by Anita M. Kobuszewski, MS, registered dietitian, has information, health tips, recipes and serves as overall guide to eating healthfully. 7 p.m. Sept. 19. Laurel Book Store, 4100 MacArthur Blvd., Oakland. 510-531-2073, www.laurelbookstore.com.
Why Prop. 30 Matters. League of Women Voters of Piedmont presents, "School Funding -- Why Proposition 30 Matters to You," with Damon Smith, Associate Superintendent, Alameda County Office of Education, and Constance Hubbard, Piedmont School District Superintendent. 7:30 to 9 p.m. Sept. 19. Ellen Driscoll Theater, 325 Highland Ave., Piedmont. Free www.lwvpiedmont.org.
The Nature of Art Festival. Stroll along the mile-long Stream Trail of Redwood Regional Park and experience more than 200 artists and performers tucked among the meadows, redwoods and oaks in this family, bicycle and dog friendly festival. 11 a.m. to 5 p.m. Sept. 23. Stream Trail, Redwood Regional Park, 7867 Redwood Road. Parking & Shuttle Pickup at Merritt College, 12500 Campus Dr., Oakland. Free www.artinnaturefestival.org.