Palo Alto based Environmental Volunteers have presented hands-on natural science education to bay area childresn since 1972.

The Trail Center is a non-profit volunteer organization promoting quality non-motorized trail opportunities for all people in the San Francisco South Bay and SF Peninsula.

Free resources for people interested in volunteer opportunities, sustainable living, intentional community, urban beautification, noise reduction, simple living, environmental protection, science and values.

The City of Palo Alto's Recycling and Solid Waste Programs help residents and businesses conserve natural resources by providing extensive programs for reducing, reusing and recycling waste that would otherwise end up in landfills.

Canopy is the nonprofit center for street, park, and garden trees in Palo Alto, California.