Synthetic Turf
Synthetic Turf is an incredibly toxic product being touted as a playable surface for all seasons and saving water. But temperatures can reach 140 degrees or more on a hot day! They also contain "forever chemicals" (PFAs) that leach into the...
Stream Conservation Area Ordinance
Sierra Club Marin Group works with other conservation organizations in Marin to protect Marin streams, particularly in the San Geronimo Valley where development threatens endangered Coho Salmon.
Endangered Northern Spotted Owl
This threatened species is further endangered by the arrival in Marin County of barred owls due to change in habitat and climate. This page offers information on how and where to report sightings of both owls.
Pt. Reyes National Seashore
The ranching industry in the Pt. Reyes National Seashore is a source of climate-heating greenhouse gases, water pollution, species extinction, and soil degradation. Ranchers were paid for their land and given 25 years to vacate, but now the National...
Past Issues
An archive of Sierra Club Marin Group issues that are no longer active