Who We Are
SLF believes breakthrough happens by working at the intersection of science, education, and the arts. Standing alone, each area fulfills a vital function. Standing together, they provide for the well-being of the earth and its people.
Founder
Bart Ziegler has a PhD in community and environmental medicine from UC Irvine, and currently directs the Samuel Lawrence Foundation which he co-founded in 2010. Prior to his community work, Bart spent 20 years building an investment company while working in the biotechnology sector as an expert toxicologist researching, advising, and investing in novel technologies. He served as a chemist developing analytical standards for the EPA and spent 5 years doing neuroscientist research at UC San Diego. Bart serves as an advisory board member to Learning Equality, which uses technology to make education available to all.
Our Team
Stephanie Keane
Director of Marketing & Creative Strategy
Stephanie B. Keane leads communications and storytelling that inspire public engagement around nuclear safety, clean energy, and community health. With over 15 years of experience guiding creative and marketing strategy for HP, Exxon, Toyota, Honda, Metro, Downtown Women’s Center, UMMA Health, and Estée Lauder, she blends research, collaboration with global teams, and cultural understanding to connect purpose, performance, and people.
Nadia Khawja
Director of Programs
Nadia Khawja leads initiatives focused on environmental justice, public education, and community engagement. Before joining SLF, Nadia supported outreach efforts for immigrant and refugee communities. Driven by a passion for addressing both environmental and humanitarian challenges, Nadia is dedicated to advancing solutions that promote equity, resilience, and a more compassionate world.
Heather Freitag
Executive Support Manager
Heather Freitag has 15 years of experience as a communications leader focused on humanitarian assistance, disaster response, food security, environmental sustainability, international business, and global health. In her work with the U.S. government, nonprofits, and the U.S. Chamber of Commerce, Heather spearheaded communications strategies and efforts, led media engagement and campaigns, steered thought leadership, and created content.
Board Members
ALEXIS DIXON
Board Member
Alexis Dixon is a Harvard credentialed mediator providing conflict management facilitation to government, corporate, and non-profit clients. Alexis’ expertise in humanistic (person-centered) psychotherapy, informs his work at Mediation Solutions International, a consulting firm he owns. In addition to his consultant practice, Alexis co-teaches a course on mediation in police work and lectures on conflict and culture at SDSU. He is an active contributor to the field of dispute resolution and serves the community on several boards advancing the arts and dialogue.
HOLLY PICKEREL
Board Member
Holly Pickerel is Design Director for Corporativo Atelier, a large weaving mill in Mexico. She leads design development and fabric execution through sustainable and best product choice for major clients in the residential and hospitality industry. Holly began her career as the owner of Studio Alegre for more than two decades, her resume includes teaching at The San Diego Art Institute as well as Design and Merchandiser at Produce Apparel and GJeans. She earned a BA in Journalism and Spanish from San Diego State University.
CHRISTOPHER HOOVER
Board Member, Treasurer
Christopher Hoover is a technology entrepreneur with interests spanning genomics, digital health and energy innovation. Based in San Diego, he focuses on business ideation, marketing and business development for startups with market-defining technologies. His experiences range from molecular biology system companies (Invitrogen) to global sales and marketing of biocomputing systems for drug discovery. He also served as the US CEO of the MedinCell Corporation, a controlled-release injectable drug delivery company.
PETER ANDERSEN
Board Member
Dr. Peter Andersen is a Professor Emeritus at San Diego State University and a distinguished scholar in innovation and communication. With over 80 professional journal reviews, Andersen is among the 100 most prolific scholars in the communication field. Beyond academia, he has contributed to environmental and conservation causes through roles with the National Sierra Club's Nuclear Waste Task Force, the Sierra Club Legal Committee, and San Diego Community Power.
FARLEY ZIEGLER
Board Member
Farley Ziegler’s film, Troublemakers: The Story of Land Art, the Wall Street Journal cited as “…among the great art documentaries of the past half-century.” Her film, Tim’s Vermeer, produced with Penn & Teller, followed inventor Tim Jenison and his pursuit to paint a Vermeer. The documentary, which also featured David Hockney, was nominated for a BAFTA, and made the Academy’s short list for Best Documentary. She previously worked with Penn Jillette and Teller, producing with Penn the hit comedy documentary, The Aristocrats.
CHUCK ZIEGLER
Board Member
Charles Ziegler has facilitated startup finance and direction for many successful technology companies, including Zeta, Verseon, and Oolu Solar. He has a Bachelors in Chemistry from Reed College, and previously has worked in financial derivatives, hedge fund management, and internet companies. Charles lives in the Bay Area with his wife and has one daughter who is an advertising executive. He spends his time practicing and playing the banjo.
Join Our Advisory Board
The Samuel Lawrence Foundation is forming an advisory board of leaders, experts, and passionate individuals to guide our mission of creating a safer, more sustainable world.
You could help provide strategic guidance on critical issues like nuclear waste management, support our messaging, and more! Interested in making a difference?
