The Transition US Team


  Carolyne Stayton is Executive Director of Transition US. She is adept at aligning community activities towards unified goals, a skill honed from over thirty years of working with nonprofit organizations and educational institutions. She has successfully galvanized communities around various social issues and has particular expertise in program development, participative leadership and “learning” organizations. Her background includes serving as Director of New College’s North Bay Campus for Sustainable Living, an innovative educational institution that promoted advanced studies in leadership, community-building and developed the nation’s first “green” MBA program. Carolyne has a master’s degree in Nonprofit Administration, resides in Sebastopol, California and is passionate about stewardship and protection of the natural world.

Don Hall has had the good fortune to participate in the Transition Movement in a variety of capacities over the past 12 years. Initially serving for two years as the Education and Outreach Coordinator for Transition Colorado, he went on to found and direct Transition Sarasota from 2010 to 2016. A certified Transition Trainer and experienced facilitator, Don was named Co-Director of Transition US in 2017. He holds a master's degree in Environmental Leadership from Naropa University and lives in community in Boulder, Colorado.

Deeply rooted in her family’s Indonesian culture, Ratih Sutrisno is an interdisciplinary communicator and designer, passionate about the efforts underway to build thriving, resilient community. Coming from a background in environmental and social justice, she believes that effective communication is vital to broadening the movement to build a just and equitable economy that works for all people and the planet. Ratih is based in Chicago, IL where she works as the Communications and Outreach Coordinator at Transition US. She holds a bachelor's degree in Environmental Sciences, Policy and Management and Interdisciplinary Design from the University of Minnesota. Outside of work, you can probably find Ratih coaching group fitness classes, tending to her houseplants, or making brunch in her co-op kitchen.
Marissa Mommaerts is an activist, organizer, grower, maker, entrepreneur & mother. After a brief career in international sustainable development policy, Marissa left Washington DC and began searching for systemic approaches to healing our ecological, economic, social and political systems--and that's when she found Transition. She joined the Transition US team in 2013 and has served in various roles supporting all aspects of the organization. Currently she serves as National Network Organizer and focuses on strengthening relationships and organizing systems at all levels of the US Transition Movement. Marissa lives in rural Western Colorado with her partner Jeremiah and son Gabriel. In addition to her work with Transition US, Marissa works locally with Citizens for a Healthy Community and with her partner co-founded Cultivating Botanical Dreams, a regenerative family farm business specializing in handcrafted hemp and herbal wellness products. Marissa has a Master's degree in International Public Affairs from the University of Wisconsin-Madison.

Board of Directors

Asher Miller is the Executive Director of Post Carbon Institute and was the former Manager of the organization's Relocalization Network. He has thirteen years of nonprofit management experience, including as founder of Climate Changers, an organization that inspires people to reduce their impact on the climate by focusing on simple and achievable actions anyone can take. Previously, he was Partnership Director at Plugged In; International Production Coordinator at Steven Spielberg's Shoah Foundation; Youth Manager at the Volunteer Center of Sonoma County; a ghostwriter; and a consultant for a number of other nonprofit groups. Asher also serves on the board of Listening for a Change, and on the Advisory Board of ErthNxt. He also recently served as a member of Senator John Edwards' Cleantech / Green Business Advisory Committee. Asher received his B.A. in English, Creative Writing from The Colorado College.

Mark Juedeman grew up on a ranch in Montana where he acquired a love for the natural world. He retired from a 30+ year career as a geophysicist in 2010 so that he could devote his time to volunteer service. He and his family lived for many years in New Orleans where he was active in historic preservation, bicycle advocacy, education, the environmental non-profit The Green Project, and obtaining personal experience with renewable energy technologies such as small wind and PV. Mark obtained a Permaculture Design Certificate in 2009 after being displaced to Houston by Hurricane Katrina.  In Houston he was a founding member of Transition Houston, executive committee member of the Houston Food Policy Workgroup, on the board of Urban Harvest, and taught with the Permaculture Guild of Houston. Mark became a certified US Transition Launch instructor in 2012, and joined the Transition US Board in 2013.  In 2015 Mark returned to Montana where he is a part-time ranch hand, serves on the board of the sustainable ag, renewable energy, and community resilience non-profit AERO, the Helena Citizens Conservation Board (established by the City of Helena), and the founding leadership team for Resilient Helena, a mulling Transition Initiative.


Samantha Wäscher

Samantha (Sam) Wechsler joined the Transition US board in October 2018. Currently, Sam provides interim leadership for organizations going through executive transitions, consults to non-profits, and provides executive coaching for women in non-profit leadership and middle management. She is known for her expertise in group facilitation; leadership and personal development; and designing and facilitating participatory trainings and workshops that draw people into engaging conversations about difficult topics, helping participants to develop a deeper sense of themselves and their role in social change efforts. From 2008-2011, Sam served as the Executive Director of Bikes Not Bombs, where she oversaw a major organizational turnaround, and from 2012-2014, she worked with the Institute for Policy Studies and the Jamaica Plain New Economy Transition.

Erik Lindberg  

Erik Lindberg is a carpenter, urban farmer, small-business owner, wilderness-lover, and aspiring writer; he holds a B.A. in Philosophy and Political Science and a Ph.D. in English and Comparative Literature, with a focus on social and cultural theory. He was on the founding steering committee of Transition Milwaukee and helped create Milwaukee’s the Victory Garden Initiative, which focuses on the growing food as a way of life. In 2010 he was named one of Milwaukee’s “Social Visionaries of the Year.” He is a frequent contributor to, where he explores the cultural, historical, and existential issues surrounding the unsustainable American way of life and its alternatives. His 9 year dedication to the Transition Movement and permaculture was made more urgent with the birth of his and his wife’s twin boys in 2011. Along with all the children of the world, he hopes to see a just, peaceful, and sustainable world in which they can pursue their unique gifts.

Mario Yanez  

Mario Yanez is dedicated to envisioning and inspiring a transition toward life-sustaining, resilient human communities. He has an academic background in finance, information systems and ecology. He has several decades of experience applying systems thinking to developing and funding cutting-edge programming and creating provocative and relevant active-learning curriculum supportive of a much-needed cultural evolution. As a Permaculture practitioner, he is applying design at various scales, implementing regenerative productive landscapes, enterprises, and organizational and social systems. Mario is native to the Greater Everglades.

Lisa Lin leads the Transportation Demand Management Department for Rice University in Houston, TX, where she implements sustainable and active transportation strategies and initiatives for the campus. Previously, Lisa was the Climate Program Manager for the City of San Antonio’s Office of Sustainability and managed the City’s first Climate Action and Adaptation Plan. Prior to that, she was the Sustainability Manager with the Mayor’s Office of Sustainability at the City of Houston. She represented the City at international convenings through C40 Cities, helped Houston achieve a STAR Communities (now LEED for Cities) rating, and oversaw the annual Carbon Disclosure Project (CDP) reporting effort. She also has experience working for a global environmental NGO on climate mitigation and started her career at a commercial architecture firm where she led the company’s green building efforts. She is the board chair for the Bayou Land Conservancy and a regional council member for the USGBC-Texas Gulf Coast. She is currently a part-time postgraduate student focusing on sustainable urban development at the University of Oxford in the UK. In her spare time, Lisa performs with her string ensemble and teaches cello lessons. She and her husband, Sam, enjoy hiking, biking, and gardening.




Carl Shuller is excited to be supporting a movement that is so closely aligned with his vision and hope for our collective future.  His formal education culminated with a Master Degree in Human Environment Relations from Cornell University.   He is a trained facilitator of the Pachamama Alliance's Awakening The Dreamer Symposium and maintains that “together we can bring forth an environmentally sustainable, spiritually fulfilling and socially just human presence on this planet as a guiding principle of our times."  Carl has participated in numerous programs at the the Regenerative Design Institute including the Permiculture Design Course and Ecology of Leadership program.   Prior to joining Transition US, Carl had a successful 18 year corporate career where his focus was on project/program management and operations. He currently resides in Petaluma, CA where he is involved in the local Homegrown Guild and is eternally grateful to be a part of such an amazing, evolving, and increasingly resilient community.





Michelle Colussi has her own consulting business and is an associate of the Canadian Center for Community Renewal (CCCR), a Canadian based organization working in the field of community economic development. Michelle has worked in education, recreation, with youth at risk, in mental health, the arts and as a board and business trainer. Michelle has an extensive background in rural development projects, community-based research, multi-stakeholder facilitation and board/leadership development in the non-profit sector. She brings her background in drama and her humor to her work. She was a key staff member in the development of the Community Resilience Manual that CCCR developed and subsequently adapted for the Government of Botswana's poverty reduction strategy. As part of her role with Transition Victoria, Michelle is working with a team, adapting the Resilience Tool and the (UK) Transition Streets program for their Building Resilient Neighborhoods Project. In her consulting practice, Michelle is currently focused on various projects related to community resilience, social enterprise development, and facilitating Transition and Collective Impact workshops.


Raven Gray is the co-founder and past President of Transition US. She is a pioneer of the Transition Towns movement in the UK, having set up the world’s 2nd Transition Initiative after Totnes. Her professional background is diverse, ranging from ecovillage educator in India, to organic dairy farmer and community arts organizer in the UK, to software entrepreneur in California. Fundamentally, she is a permaculture educator and activist, with a strong commitment to environmental, social and economic sustainability. Raven has dedicated her life to restoring the earth’s balance, and is a frequent speaker and writer on this topic and the urgent need for transition. She received a BA in Culture, Ecology and Sustainable Community from New College, California, and an MSc in Holistic Science: Ecological Education from Schumacher College in the UK.


Richard Heinberg is author of ten books, including The Party’s Over, Peak Everything, and the soon-to-be-released The End of Growth, Richard Heinberg is widely regarded as one of the world’s most effective communicators of the urgent need to transition away from fossil fuels. With a wry, unflinching approach based on facts and realism, Richard exposes the tenuousness of our current way of life and offers a vision for a truly sustainable future.

Senior Fellow-in-Residence at Post Carbon Institute, Richard is best known as a leading educator on Peak Oil—the point at which we reach maximum global oil production—and the resulting, devastating impact it will have on our economic, food, and transportation systems. But his expertise is far ranging, covering critical issues including the current economic crisis, food and agriculture, community resilience, and global climate change.

Richard’s latest book, The End of Growth: Adapting to Our New Economic Reality makes a compelling argument that the global economy has reached a fateful, fundamental turning point. As energy and food prices escalate and debt levels explode, paths that formerly led to economic expansion now go nowhere. The “recession” will not end in a “recovery,” yet in the coming years we can still thrive—if we maximize happiness rather than the futile pursuit of growth at any cost.

Richard is a much sought-after speaker and has presented in dozens of countries and across the United States. He’s featured in many documentaries, including End of Suburbia and Leonardo DiCaprio’s film 11th Hour. Richard has appeared on ABC’s Good Morning America, Canadian Broadcasting Television, BBC, Australian Broadcasting Corporation, and Al Jazeera, as well as numerous radio programs (national NPR) and print publications (Time magazine). He lives in northern California with his wife and is an avid violin player.

Rob Hopkins is the originator of the Transition concepts and co-founder of the Transition Network. He spent many years teaching permaculture and cob building, mostly when living in Ireland. Now based in Totnes, he is a member of Transition Town Totnes, works part time for Transition Network, publishes, is author of the ‘Transition Handbook’ and generally spends far too much time thinking about Transition stuff. He is also a Trustee of the Soil Association.

Rob is a family man with 4 sons, Rowan, Finn, Cian and Arlo, and is deeply in love with the raised beds he just finished building.

Peter Lipman



Peter Lipman  is policy director at sustainable transport charity Sustrans and is particularly proud of their DIY Streets project. He’s also a part time lawyer and chair of trustees of the Centre for Sustainable Energy.


Vicki Robin is well-known as the co-author with Joe Dominguez of the international best-seller, Your Money or Your Life: Transforming Your Relationship With Money and Achieving Financial Independence. The Wall Street Journal, Money, Woman's Day, Newsweek, Utne Magazine and the New York Times, and newspapers around the world have reported on her work on lowering consumption in North America. Vicki served on the President's Council on Sustainable Development's Task Force on Population and Consumption. She is also co-founder of the New Road Map Foundation, the Center for a New American Dream, Sustainable Seattle, Conversation Cafes, the Simplicity Forum, the Turning Tide Coalition, Let’s Talk America, and currently Transition Whidbey which is seeking to catalyze the community on Whidbey Island to greater food, fuel, energy and economic self-reliance in light of predicted impacts of oil depletion and climate change.

Chong Kee Tan has been an activist for 20 years, working in the area of Asian democracy, press freedom, censorship, and -- after coming to the United States -- in the area of equal rights and sustainability.  After the 2008 financial crisis, he began studying our financial and monetary systems, and quickly came to realize that changing these systems could help address many of the most pressing problems facing the world today. He started the regional currency Bay Bucks as a TransitionSF project. Chong Kee received his BA (Hons) in Computer Science from Cambridge University and his PhD in Chinese Literature from Stanford University.

Pandora Thomas is a passionate global citizen who works as a sustainability and environmental education consultant, permaculture teacher and curriculum developer. She is a certified green building professional, credentialed multiple subjects’ teacher and studied at Columbia University’s School for International and Public Affairs, Teachers College, and Tufts University. Her writing includes a children's book, various curricula, and a greenbuilding manual for youth. She lectures on the intersection of diversity, social justice, women's leadership, and sustainability. Pandora co-founded Earthseed Consulting LLC, a holistic consulting firm whose work expands the opportunities for sustainable living for diverse communities. Her clients include Toyota and UC Berkeley. She most recently co-founded the Black Permaculture Network, which is serving a community of diverse permaculturalists around access and support. She has worked with groups as diverse as Iraqi and Indonesian youth to men serving in San Quentin creating inspiring and hands on programs around biomimicry, sustainability, and outdoor and environmental education. She has studied four languages and lived and worked in over twelve countries and her other achievements include presenting at Tedx Denver and SF, and being awarded fellowships to Columbia University, Green For All and the Applied Research Center.  


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