Who We Are

Jody Timms (she/her)

Jody Timms (she/her)

Jody is a founding member of 350Marin, first hearing about the international organization, 350.org in 2012 and then helping to create the Marin local group in March of 2013. She is a long-time community organizer and activist, getting started in response to the Vietnam War at age 16. She loves connecting people, ideas and actions for social change and to make the world the best place possible for all generations here and yet to come. Currently, she spearheads (and adores) the College Internship Program and the “Advocating for Climate Leadership” campaign. You might just find her wherever you look!

Silke Valentine (she/her)

Silke Valentine (she/her)

Residence: Novato

Activities: In the Steering Committee of 350 Marin, 2014 – present; Member of Plastic Free Marin in 2020 and the Sierra Club Marin Group Executive Committee in 2021 

I am a mother and grandmother and am especially concerned about climate justice, the human-made climate breakdown, plastic pollution, the sixth mass extinction, and, therefore, a livable future for us and the next generations. 

My dedication is to raise awareness of the urgent need to end the era of Fossil Fuels and Accelerate a just transition. I am committed to protecting and creating a healthy and caring environment where everyone can thrive in a just society. This means living sustainably with respect, consideration, and praise for our diversity, the rights of nature, and all life on earth. 

In 350Marin, I helped organize rallies and marches, including “Stand with Standing Rock” and “Stop Banking on Climate Change” in cities and towns of Marin. These rallies were held in front of Chase, Bank of America, Citibank, and Wells Fargo in coalition with the Sierra Club, Sunrise Movement, and Sustainable groups in Marin and 350 Bay Area locally, 350.org nationally, and Friday for Future internationally. I worked on passing climate emergency resolutions in Novato and other jurisdictions in Marin County.

For more than three years, I have been organizing to prevent the building of a Costco Mega Gas Station in Novato with protests and a petition.

Patrick Costello (he/him)

Patrick Costello (he/him)

Patrick lives in Fairfax and is a 350Marin steering committee member. He leads the “Financing a Green Climate Future” campaign which helps community members move away from banks that lend to the fossil fuel industry, learn about low-carbon investment strategies, and explore alternative economic and banking models. He is a Certified Financial Planner™ and the founder of Green River Sustainable Financial Services, serving individuals who wish to lower the carbon footprint of their investments. He is also the author of “Low-Carbon Investing: Defending the Climate/Emphasizing Performance,” published in 2018.

Julia Janeway

Julia Janeway

Our Mission

350Marin is made up of grassroots activists who are deeply concerned about climate breakdown. Regionally, we’re affiliated with 350BayArea, which is working to achieve a significant decrease in all heat-trapping gases both locally and statewide. Globally, we’re part of the 350 movement that’s continuing to grow in 188 countries around the world. We are committed to holding our leaders and communities accountable to the realities of science and the principles of social justice. We hope you’ll join us.

To end our dependence on fossil fuel, 350Marin:

    • Participates in climate breakdown campaigns with regional, state, national and international coalitions.
    • Uses multiple techniques of non-violent resistance and civil disobedience pioneered by Gandhi and Martin Luther King.
    • Supports and encourages activism through artistic expression.
    • Always respects, learns from, and supports each other
    • We also network with other non-profit, environmental and social justice organizations in Marin working for positive change.

What We’re A Part Of

350 Bay Area is our regional umbrella organization, which provides federal non-profit status, as well as logistical and organizational support to local Bay Area 350 groups including 350Marin, 350 Sonoma, 350 San Francisco, and 350 East Bay. As well, 350 Bay Area has regional campaigns that local 350 groups support on a group-by-group basis.
Visit their website →

350 Bay Area Action endorses and helps elect climate champions, lobbies elected officials to fight for bold climate solutions, and works to ensure that climate justice is at the top of the political agenda.
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350 believes in a safe climate and a better future — a prosperous and equitable world built with the power of ordinary people, driven by renewable energy and rooted in justice.
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The Science of 350

Okay. 350 is an easy name to remember. But what does it mean? Scientists around the world are in almost unanimous* agreement: 350 parts per million (350 ppm) of carbon dioxide (CO2) in the atmosphere is the maximum safe limit to maintain life on Earth as we know (and love) it.

The bad news? We’re currently at 410 ppm. And rising.

The good news? We’re part of a global grassroots movement working in multiple ways in multiple countries to bring us (all of us) back from the brink and back on track.

The best news? We’re starting to make a difference. And you can join us.

* 97%. That’s getting pretty close.

“Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it’s the only thing that ever has.” – Margaret Mead (American cultural anthropologist)