California Environmental Resource Evaluation System is an online index to environmental information for the county, including road, weather, and flood conditions, demographics, historical resources and maps.

Provides help to groups that want to plant trees within the city. Includes tree care information, volunteer opportunities, and planting FAQs.

Friends of the creek collect articles on local development plans and environmental issues. Also lists the organization's events.

Information on city efforts to reduce pollution, promote recycling, and improve the environment.

Annual flower show held in San Francisco at the Cow Palace.

Promotes environmental studies and increased plantings at local schools, as part of a healthier learning environment.

The largest zoological park in Northern California and one of the Bay Area's most popular cultural and recreational attractions, the San Francisco Zoo is home to over 250 species of exotic and domestic mammals, birds, reptiles, amphibians, fish and invertebrates

Garden in Golden Gate Park offers guided tours and other educational opportunities.