Diana Hull, Ph.D., President, is a writer and researcher on immigration and population issues. She is a Behavioral Scientist trained in Demography and a retired Clinical Associate Professor from the Baylor College of Medicine's Department of Psychiatry in Houston, Texas. Dr. Hull is a former member of the Sierra Club's Population Committee and the Southern California Demographic Forum. Her research on the health effects of changed environments on individuals and groups has been published in Social Science and Medicine, Psychological Review, International Journal of Psychosomatic Research and many other journals. She was a founding member of both the Media Division and the Health Division of the American Psychological Association and is a member of the University of California at Santa Barbara Foundation Board of Trustees (emeritus). A graduate of CUNY, she earned a master's degree from the University of Michigan and a Ph.D. from the University of Texas School of Public Health.
Ben Zuckerman, Ph.D., Vice-President, is a Professor of Physics and Astronomy at UCLA. Dr. Zuckerman is a longtime environmentalist who has been very involved with the Sierra Club's population/immigration/environment debate and was an elected member of the Sierra Club's national board of directors. He has developed and co-taught a UCLA Honors course entitled "The 21st Century: Society, Environment, Ethics" and has co-edited six books, including Human Population and the Environmental Crisis (Jones & Bartlett, 1995). He received his bachelor's and master's degrees from MIT and his Ph.D. from Harvard University.
Randy A. Alcorn, Treasurer, is a career financial and business operations executive who began writing opinion columns in April 2000 for the then New York Times owned Santa Barbara News-Press where he had served as CFO for 23 years. His biweekly column, entitled Right On Target, garnered a broad audience among News-Press readers and is currently published in several newspapers along California’s central coast. His writings have been variously described as unusual, iconoclastic, clinically logical, and blatantly forthright. While often labeled a Libertarian by those who require the convenience of categorization, he is not affiliated with any political party, religion, or ideology, and prefers to apply independent objectivity to the examination of issues and topics ranging from politics and economics to religion and human social behavior.Alcorn is a Michigan native, a cum laude graduate of Eastern Michigan University, who relocated to Santa Barbara, California in 1972 where, along with his wife and two daughters, he continues to reside.
Stuart H. Hurlbert, Ph.D., Secretary, is an Emeritus Professor of Biology at San Diego State University. His scientific research is in the areas of lake ecology and biostatistics. He is a Fellow of the American Association for the Advancement of Science, member of many scientific societies, winner of the National Academy of Sciences 2003 Award for Scientific Reviewing, and works to stimulate environmental scientists and their professional societies to show greater courage in addressing U.S. population growth and its consequences. Dr. Hurlbert graduated from Amherst College and earned a Ph.D. from Cornell University. 
Phoebe Cowles, M.A., Board Member, is a long time collector of 17th and 18th century European art. She has served on the boards of the Nature Conservancy, Planned Parenthood, the American Conservatory Theater, the Sierra Club Foundation, the Honolulu Symphony and the Berkeley Art Museum. She has a bachelor’s degree from Wellesley College and a master’s degree from The American University, did work towards a Ph.D. in European History at Stanford University and studied iconography at the Graduate Theological Union at Berkeley.
Marilyn Brant Chandler DeYoung, earned a Master's degree in Urban Planning from UCLA and has served as an executive or partner in several Southern California architect/planning firms and was President of Marilyn Brant & Associates. She served on the Board of Population Crisis Committee for 23 years (now called Population Action International), and on the board of Population Communications Inc, for 7 years and was a key supporter of the Entertainment-Education program which used soap operas and other entertainment to motivate changes in reproductive practices. She founded and chaired the non-profit Population Education Committee which concentrated on reducing the USA’ teen age pregnancy. She also has a strong record of service on government committees and numerous corporate, educational, non-profit, and civic boards. These include the President's Commission on Population Growth and the American Future, the White House Fellowship Commission, , Southern California's Association of Governments Regional Advisory Council, National Council of the Salk Institute, Otis Art Institute, Pasadena Junior League, LACMA Docent Council, Los Angeles World Affairs Council, Center Theater Group of the Los Angeles Music Center and the United Nations Population Fund.
Otis L. Graham, Jr., Ph.D., Board Member, is an historian of modern America, a Professor Emeritus at the University of California, Santa Barbara, and currently a Visiting Scholar at the University of North Carolina, Chapel Hill. He is the author or editor of 19 books and numerous articles on the history of the United States, especially on American reform movements, political economy, environment and immigration. He has been named a Guggenheim Fellow, a Fellow at the Woodrow Wilson Center for Scholars, the National Endowment for the Humanities, and the Center for Advanced Study and Behavioral Sciences, and received the Robert Kelley Memorial Award from the National Council on Public History. He is a graduate of Yale University and earned a Ph.D. from Columbia University.
Dick Schneider, M.S., Board Member, is an environmental writer, policy analyst and activist who lectures on the role of population growth in degrading natural ecosystems and eroding the quality of life. With expertise in the effects of acid rain and metals pollution on high altitude lakes, he helped establish the first acid rain monitoring station on the western slope of the Rocky Mountains. A resident of the San Francisco Bay Area, he led passage of an Alameda County open space protection initiative in 2000 and currently advises citizens groups on local growth management policies. He is a trustee of the Head-Royce School in Oakland, a director of the Bay Area Transportation and Land Use Coalition, and co-author of Toxics A to Z: A Guide to Everyday Pollution Hazards . He received his bachelor’s and master’s degrees from the University of California at Berkeley.
Eddie Tabash, J.D., Board Member, graduated Magna Cum Laude from UCLA and received his J.D. from the Loyola University School of Law. He is a practicing attorney. Mr. Tabash has been the on the most publicly active persona in the family planning movement in California for over 20 years, making over 1,000 public presentations on behalf this issue. In 2001, he was second out of four in the Democratic Primary for the California State Assembly in the 55th Assembly District.
CAPS Advisory Board
- Tim Aaronson, M.A., Educator, Retired
- Denice Spangler Adams, M.S., Community Volunteer
- Carolyn Pesnell Amory , Community Volunteer
- Joe Armendariz, Nonprofit Executive Director
- Leon Bouvier, Ph.D., Demographer
- Allan F. Brown, Business Owner & Community Volunteer
- Benny Chien, M.D., Physician
- Robert Gillespie, Director of Population Communication
- Helen Graham, Former Executive Director of CAPS
- Victor Davis Hanson, Ph.D., Senior Fellow, Hoover Institute
- Edward C. Hartman, MBA, Author, Personal Financial Advisor
- Richard Lamm, L.L.D., Former Governor of Colorado
- Martin Litton, Former Member of the Sierra Club's Board
- Kenneth Pasternack, Political Activist
- Nancy Pearlman, Producer and Distributor of EcoNews
- Fred O. Pinkham, Ed.D., President, Institute for Reproductive Health
- William N. Ryerson, President, Population Media Center
- George Sessions, Professor, Sierra College
- Louis F. Villaneuva, Geologist, Petroleum Engineer, Retired
- David Brower (1912-2000), First Executive Director of the Sierra Club
- Garrett Hardin, Ph.D. (1915-2003), Professor, Ecologist and Microbiologist
- Jane Hardin (1922-2003), Political Activist
