Terry Tamminen, President

From his youth in Australia to career experiences in Europe, Africa, China and across the United States, Terry has developed expertise in business, farming, education, non-profit, the environment, the arts, and government.

A United States Coast Guard-licensed ship captain, Terry has long been drawn to the undersea world, starting in the 1960s with a family-run tropical fish breeding business in Australia and continuing with studies on conch depletion in the Bahamas, manatee populations in Florida coastal waters, and mariculture in the Gulf States with Texas A&M University.  

On land, Terry managed the largest sheep ranch east of the Mississippi, assisting the University of Minnesota in developing new methods of livestock disease control. Terry also managed a multi-million dollar real estate company, owned a successful recreational services business, and assisted the West African nation of Nigeria with the creation of their first solid waste recycling program...  (Read More)

Like Terry's Facebook page
Follow Terry on Twitter @terrytamminen


Kristina Haddad, Senior Program Associate

Kristina Haddad is Senior Program Associate for Seventh Generation Adivsors. In this capacity, she is working to help create a national response to climate change by building state and local climate action plans. Previously, Ms. Haddad was the Forestry Project Manager for the Environment Now Foundation, Santa Monica, California, where she managed grant making and worked closely with forest activists on the development of strategy and the implementation of initiatives. Before joining Environment Now, she was the Programs Director at Santa Monica BayKeeper, where she ran the successful BeachKeeper Volunteer Water Quality Monitoring Program, as well as many other projects and programs.

Ms. Haddad is the author of Crude Awakenings: Could an Exxon Valdez Oil Spill Happen in Southern California?, the findings of a three-year research project for Santa Monica BayKeeper that garnered significant attention from the media and state policymakers. She is currently a board member for both Sequoia ForestKeeper, a nonprofit, grassroots organization whose mission is to protect the world's Giant Sequoias, and the Fund for Wild Nature, whose mission is to invest in cutting-edge grassroots organizations and innovative conservation efforts to protect biodiversity and wilderness. Ms. Haddad is also an accomplished actor/writer/acting coach and wrote the original one-woman show, Save Sheldon!, which she has performed at numerous venues to great response.  Ms. Haddad holds a B.S. in social science from the University of California, Berkeley.

To learn more about Save Sheldon!, click here.


Gregory Lopez, Project Manager and Smart City Director

Gregory actively manages project opportunities for Seventh Generation Advisors and the R20 Regions of Climate Action. Gregory works directly with clients, advising them on matters of finance, technology, and development. Over the years, he has supported numerous prospective deals, including those in waste management and renewable energy.

Furthermore, Gregory directs a novel Smart City Program to aid cities in the adoption of smart, sustainable solutions. Gregory conducts outreach to city governments through the R20 network, leveraging tools and expertise to identify and develop best-fit solutions.

Gregory is a graduate of the University of California, Los Angeles, where he earned a Bachelor of Science degree in Environmental Science with a focus in Environmental Systems and Society. During his time as a student, he participated in the research of large mammal movement in the Eastern Santa Monica Mountains under the auspices of the Mountains Recreation and Conservation Authority. The report was critical in identifying probable wildlife crossing points for the MRCA, supporting their larger initiative of protecting urban wildlife.

In his free time, Gregory still enjoys a myriad of whimsical yet agreeable activities with loved ones.


Jenna Cittadino, Communications and Development Director

As Communications and Development Director for Seventh Generation Advisors, Jenna Cittadino manages and executes grant writing proposals, develops fund raising initiatives, implements marketing strategies, manages the financials, and conducts research as needed. She previously served as Executive Assistant to Terry Tamminen, managing the daily logistical operations of the organization.

Ms. Cittadino is a Phi Beta Kappa graduate of the University of California, Los Angeles, where she earned a Bachelor of Arts degree, Magna Cum Laude, in Communication Studies with a minor in English. In her spare time, Jenna enjoys reading novels, writing children's books, singing (usually lullabies these days), building Legos with her son, attending music class with her daughter, and dreaming.   

Leslie Mintz Tamminen, Ocean Program Director

Leslie Mintz Tamminen is a consultant for Seventh Generation Advisors and is currently focused on marine debris and water/ocean issues. 

In October of 2009, Leslie was appointed to the California Ocean Science Trust Board of Trustees. Formerly, Leslie was a special advisor to Lt. Governor John Garamendi, and the California Economic Development Commission. Leslie was the Legislative Director and staff attorney for the environmental nonprofit organization Heal the Bay from 1997 to 2008, where she was responsible for development and implementation of statewide water quality legislation, and the first-ever state Education and the Environment Initiative, a requirement for environmental education principles and curricula development in all core disciplines in public schools for K-12.

Leslie is a graduate of the University of California at Berkeley, and the University of Southern California Law Center, and lives in the Los Angeles area with her son and husband Terry Tamminen.

The California Ocean Science Trust provides the science for the California Ocean Protection Council.  To find out what California is doing toprotect our oceans, please email us or visit their websites.