One Tam

Wondering what’s growing on Mt. Tam while we shelter-in-place?  Join One Tam science expert Rachel Kesel to discover some of the tiny and tough plants growing on Mt. Tam’s rocky serpentine soils.

Get ready for City Nature Challenge and celebrate the 50th anniversary of Earth Day by learning about nature near you and gaining practical skills for nature observation around your home and neighborhood. 

Get ready for City Nature Challenge and celebrate the 50th anniversary of Earth Day by learning more about community (citizen) science and the importance of being a naturalist in the 21st century.

The creation of Earth Day on April 22, 1970 marked what many consider to be the birth of the environmental movement.

Come join Marin County Parks and One Tam in this community-based effort to improve habitat while preparing for sea level rise.

Come join Marin County Parks and One Tam in this community-based effort to improve habitat while preparing for sea level rise.

Kayak along the tidal marshes in Richardson Bay and learn about the history of Bothin Marsh and how Marin County Parks and One Tam are planning for sea level rise.

Join Marin Municipal Water District, One Tam and the California Academy of Sciences at Lake Lagunitas to investigate mushroom biodiversity in this mycoblitz. Hone your naturalist skills, participate in community (citizen) projects through the North American Mycoflora Project and iNaturalist and become our scientific collaborator for a day! 

Join us for a habitat restoration project in Samuel P. Taylor State Park!

Join us for a habitat restoration project in Samuel P. Taylor State Park!