► Take action to bring restoration to Coyote Valley.
► See the full list of Primary Election Endorsements.
► Read about subsidence, sub-surface saltwater infiltration, groundwater depth, liquefaction, and their impacts on sea level rise.
► Let Redwood City City Council know that the Redwood Life project is just too huge.
► Take a hike!See the comprehensive list of Chapter activities available through mid-June.
Two Actions, One Valley: Take the Survey and Vote Yes on Santa Clara County Measure D
The Santa Clara Valley Open Space Authority (OSA) is requesting public input on the Coyote Valley Conservation Areas Master Plan (areas shaded yellow on the map above). This plan will guide restoration, access, and management of Coyote Valley. This is our opportunity to move from protection to restoration, and shape the future of Coyote Valley.
Growing Community: Celebrating Arbor Day and Urban Forests in Mountain View
On April 25th, the Loma Prieta Chapter’s Forest Protection Committee participated in a special Arbor Day tree-planting event and vendor fair organized by the City of Mountain View in honor of Earth Month. The event took place at beautiful Cuesta Park in the heart of town and ran from 9 a.m. to noon. It featured a large-scale community tree planting led by the City’s Urban Forestry team and Canopy, a local nonprofit focused on urban forestry.
Local sustainability organizations set up booths and tables, offering educational materials and resources in a family-friendly
atmosphere that highlighted the benefits of a healthy urban forest. The Loma Prieta Forest Protection Committee contributed by hosting an informational table, sharing resources on urban forest protection, climate resilience, and local advocacy. Learn more about this Mountain View event.
Executive Committee Candidates
Are you a potential candidate for the Loma Prieta Chapter Executive Committee?
Executive Committee members develop and facilitate execution of an overall strategy to grow and engage our membership and strengthen the chapter and provide support to our chapter’s local entities to carry out the Club's mission of exploring, enjoying, and protecting the planet. Members should be willing to assist our chapter in various leadership areas, spend a minimum of 5-10 hours a month on chapter business, and typically take on additional duties such as
serving on other chapter level committees covering membership, communications, fundraising, finance, conservation, politics and as liaisons to chapter internal entities, other Club chapters, and to the state and national Club organizations. Learn more about applying to serve on our Executive Committee.
South Bay Cities Need to Fix Water Pollution Problems
Loma Prieta Chapter members love our local open spaces and want to know about environmental threats to assets such as the Bay, which we are actively working to protect.
Kayakers, paddleboarders, birdwatchers, and hikers enjoy the South San Francisco Bay marshes and sloughs and want to know that the water is safe for people, for the wildlife that depends on it, and for the vital ecology of the Bay itself. Unfortunately, in Sunnyvale and Mountain View, usually environmentally conscious cities, polluted discharges are sending dangerous levels of bacteria into
creeks and into the Bay. This is the subject of a lawsuit filed by San Francisco Baykeeper in 2020 and recently decided in their favor on March 31, 2026. Learn more about this bacterial pollution.
Last month, in our first article, we discussed why nature matters more than ever. This month we focus on how sea level rise will impact each shoreline differently.
Statewide flood projections don’t take local conditions into account. Local social, geographic, geologic, and hydrologic characteristics can significantly influence the nature of the threats to a given community. We need to be thinking about their unique shorelines and taking inventory of the circumstances to be better prepared.
Here are some factors that can alter how severely sea level rise impacts a certain shoreline.
Subsidence
Sub-surface Saltwater Infiltration
Groundwater Depth
Liquefaction
The unique geology, hydrology, and subsurface infrastructure in each city must be considered to develop effective sea level rise adaptation strategies. Learn more about these factors and their impact.
Letter to the Editor: The Potential Damage from ‘Redwood Life’ Megaproject
The San Mateo Daily Journal: "Regarding your article “Life sciences treading water,” the proposed life sciences megaproject, “Redwood Life” is still aggressively moving forward along the shoreline of Redwood Shores. This huge project is fundamentally mismatched to its location. The site is subsiding on former landfill, already vulnerable to sea-level rise and rising groundwater within the dump itself — hardly a stable foundation for such an ambitious development.[...]" - Gita Dev, Conservation Committee Chair Read the full letter to the editor.
Technical Recommendations to Strengthen the Safety Element for Effective, Citywide Implementation
"The draft Safety Element provides a strong and thoughtful assessment of the risks facing East Palo Alto, particularly related to flooding, sea level rise, groundwater rise, and contamination. We appreciate the City’s leadership in identifying these complex and interconnected challenges. However, while the draft effectively identifies risks, it does not yet consistently translate those risks into a clear, enforceable policy framework. To ensure the Safety Element functions as an effective tool for protecting the East Palo Alto community, we recommend strengthening the plan by establishing explicit requirements, clear triggers for action, and a cohesive, citywide approach. The comments below are intended to support that next step."
Sea Level Rise Webinar Series
Learn how nature can help fight sea level rise with cost-effective and sustainable solutions. Watch recordings of our webinar series with SF Bay experts and please share with your local elected officials.
Environment Stewardship Program Spotlight
Eric Brooks on Housing Affordability and the "Housing" Debate
Across the globe, housing affordability has surfaced as a defining public policy challenge. In cities like San Francisco, the combination of skyrocketing rents and displacement pressures has ignited a fierce debate: Is the crisis a simple matter of supply, or is it a byproduct of speculative interests?
At a recent meeting of the Sierra Club Loma Prieta Chapter’s Environmental Stewardship Program, Eric Brooks, Campaign Coordinator
for Our City SF, shared a perspective that challenges the mainstream "build-at-all-costs" narrative. With more than a decade of advocacy experience, Brooks argues that the housing crisis is being mischaracterized by powerful economic interests, specifically those associated with the most vocal housing groups that advocate mainly for luxury and market rate housing. Read more about this Environmental Stewardship Program Spotlight.
Redwood LIFE Project is Just Too HUGE
Redwood City deserves a better alternative. A massive speculative biolab development, the Redwood LIFE Project, is proposed along the Redwood Shores Ecological Reserve. This is not a typical project. At more than 5 million gross square feet it will be more than double the size of the Oracle campus and three times the size of the Salesforce tower. The Redwood City City Council needs to hear NOW that the community is still concerned about this project and is looking for Council leadership to ensure that the final project is right-sized and compatible with this location and its sensitive shoreline.
"We sent scoping comments on the project on June 29, 2023. We are writing to provide comments on the Draft Environmental Impact Report (DEIR) for the proposed development at 1005 O’Brien Drive and 1320 Willow Road. While the DEIR provides a useful overview of the project, several significant concerns remain insufficiently addressed."
Your 2025 Story is Live: Experience the Extended Edition
Explore our year in conservation, from securing protections for open space, water, and clean air, to helping people explore and enjoy our local outdoors, your volunteering and financial support empower what we accomplish together for all living beings in the Bay Area. Thank you for partnering with us in our mission to ensure a healthy and thriving planet that we lovingly call home. Read our 2025 Chapter Summary.
A massive threat looms over one of our most cherished natural treasures. San Bruno Mountain is not just any mountain, it is a sanctuary for endangered butterflies, a haven for rare plants, and a refuge of unparalleled ecological significance. The proposed project threatens to unravel the delicate balance of this natural treasure, and we urge you to take action to protect it.
The City of Brisbane is considering a plan to build a massive 1.3 million-square-foot warehouse, 100 feet tall, right in the heart of San Bruno Mountain, at the historic Guadalupe Quarry.
This industrial facility would bring hundreds of workers (1,500!) and an incredible amount of traffic through our city and into the heart of sensitive habitat. Sign the petition today.
One of the best ways to safeguard a thriving and just future is by ensuring that your Loma Prieta Chapter remains a champion for the environment of Santa Clara, San Mateo, and San Benito Counties. Naming us as a beneficiary in your bequest will provide meaningful and enduring resources that will allow continued local and powerful environmental activism.
Please contact our Chapter Development Coordinator Justyna Guterman for the specific language for your estate planning and/or read more here. For additional information about planning a bequest please contact Julia Curtis, (800) 932-4270.
Previously Unrecognized Global Warming Likely Caused By Atmospheric Microplastics
By now nearly everyone is realizing that global warming is happening faster than anyone predicted as recently as only a few years ago. New sources of warming are discovered regularly, but the warming effect of tiny plastic particles may be particularly unexpected, coming from tiny bits of colored plastic objects rather than from greenhouse gases. Above what’s come to be known as the Great Pacific Garbage Patch, a study published in the journal Nature Climate Change found that airborne plastic, particularly colored plastic, is likely to produce “a measure of trapped heat” having “nearly five times the local effect of black carbon.” Join the SCLP Plastic Pollution Prevention Committee as we educate ourselves and others on how to identify and address the growing list of harms inflicted on the environment and public health by prolific and unnecessary plastic production.
Finnish Led University Studies Demonstrate that Playing in Mud & Sand Boosts Children’s Immune System
Your connection: Join our Plastic Pollution Prevention Committee as we educate ourselves and others on how to identify and address the growing list of harms inflicted on the environment and public health by prolific and unnecessary plastic production.
Photographers, see the great images in our Chapter Annual Summaries and help protect local nature with your images! Share with us your high-resolution photos of local nature, with or without people, to inspire local residents to support Loma Prieta Chapter work. Please contact Chapter Development Coordinator Justyna Guterman.
Historic May
1933 (the year that Loma Prieta Chapter was founded), on May 5, the New York Times reported that Karl Jansky had detected radio waves from the center of the Milky Way Galaxy. This discovery lead to the birth of radio astronomy. May 25th, 1803, birth of Ralph Waldo Emerson May 27th, 1907, birth of Rachel Carson [1] [2], see also Sierra Club's Rachel Carson Society May 28th, 1892, founding of Sierra Club
“Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts. There is something infinitely healing in the repeated refrains of nature - the assurance that dawn comes after night, and spring after winter.” Rachel Carson
2026.05.17, your Chapter Director joined the Loma Prieta Pathfinders for a hike in Foothills Open Space Preserve. Thank you leaders Kurt and Joan.