Since 1918, Save the Redwoods League has protected more than 200,000 acres of redwood forest and helped create 66 redwood parks and preserves.... Read more >

The Schmidt Family Foundation, established by Wendy and Eric Schmidt in 2006, brings philanthropic resources to some of this century's greatest challenges across the globe. Applying new knowledge and innovation is our model for problem sol... Read more >

Founded in 2006 by Nat Simons and Laura Baxter-Simons as a private family foundation, the Sea Change Foundation focuses primarily on climate change mitigation and clean energy policy in the United States and internationally.... Read more >

Located beside PIER 39's K Dock, the Sea Lion Center celebrates the boisterous colony of California Sea Lions that congregate on the marina docks. Naturalists present complimentary interactive programs focused on the ecology and natural hi... Read more >

The San Francisco Estuary Institute (SFEI) is one of California's premier aquatic and ecosystem science institutes. Our mission: provide scientific support and tools for decision-making and communication through collaborative efforts. We p... Read more >

The Sierra Club works to defend the environment and safeguard the future of the planet. It has 64 chapters in 50 states.... Read more >

The mission of Solano Land Trust is to protect land to ensure a healthy environment, keep ranching and farming families on their properties, and inspire a love of the land.... Read more >

The Sonoma County Agricultural Preservation and Open Space District permanently protects the diverse agricultural, natural resource, and scenic open space lands of Sonoma County for future generations.... Read more >

Our mission is to work with our community to identify and lead actions that achieve and sustain ecological health in Sonoma Valley.... Read more >

Since 1976, Sonoma Land Trust has protected nearly 50,000 acres of beautiful, productive and environmentally significant land in and around Sonoma County.... Read more >

South Bay Clean Creeks Coalition originated as a community based effort called Friends of Los Gatos Creek. To date, this group has conducted over 140 creek cleanups removing 170 tons of trash from Los Gatos Creek and the Guadalupe River.... Read more >

From biodiversity to air, to water quality and climate change, Stand.earth designs and implements strategies that make protecting our planet everyone’s business. Our current campaigns focus on shifting corporate behavior, breaking the hu... Read more >

The Suisun Marsh Natural History Association is a 501(c)3 non-profit volunteer organization, dedicated to the rescue of native California wildlife and to the preservation of the Suisun Marsh, working through the dual avenues of wildlife re... Read more >

The mission of the Sulphur Creek Nature Center is to instill a sense of responsibility for the welfare of our world by bringing people and animals closer together through wildlife rehabilitation and education.... Read more >

The SunRidge Conservancy was formed in 1998 for public scientific and ecological purposes, including the preservation, protection and enhancement of land in its natural scenic, historical, agricultural, and open space states. SunRidge Co... Read more >

Sunrise Bay Area is the Bay Area hub of Sunrise Movement. Sunrise is a youth-led movement to stop climate change and create millions of good jobs in the process.​... Read more >