Board of Directors

Pesticide Action Network North America’s Board of Directors include:

Susan Baker

Susan BalerTrillium Asset Management LLC

Susan is Vice President at Trillium Asset Management, an independent investment advisor devoted exclusively to sustainable and responsible investing with offices in Boston, MA, Larkspur, CA, and Durham, NC. At Trillium she is a member of its Shareholder Advocacy team specializing in the intersection of environmental, social, and governance performance and shareholder value creation. Her advocacy work includes direct communication with company leadership, filing shareholder proposals, and public policy advocacy on a broad range of issues including sustainable sourcing, toxics reduction, environmental health, and diversity and inclusion. Susan began her career at Harvard Management Company and joined Trillium in 1986, where she has held positions as a portfolio manager, equity research analyst, and shareholder advocate. She is an active member of the Investor Environmental Health Network, and serves on the board of the Interfaith Center on Corporate Responsibility and The Thirty Percent Coalition. Susan received her B.A. from Middlebury College and Ed.M. from Harvard.

Mary Brune

Mary BruneEnvironmental health advocate

Mary is a mother and writer based in Alameda, California. Motivated by the issue of toxic chemicals in human breast milk, Mary and three of her friends founded Making Our Milk Safe (MOMS) in 2005, with the goal of identifying and eliminating sources of toxic chemicals that make their way into our bodies and breast milk. Mary brings a connection to a wide network of moms interested in environmental health issues, as well as expertise in online organizing, social media, and strategic communications. She has written about toxic chemicals for The Huffington Post and Mothering magazine and contributed to The Smart Mama’s Green Guide. Mary and her work with MOMS was featured in Not Just A Pretty Face by Stacy Malkan, and The Virtuous Consumer by Leslie Garrett. In 2009, she received the Suzy Cain Leadership award from The Breast Cancer Fund for her work to ban toxic chemicals that contribute to breast cancer. Prior to joining MOMS, Mary worked as a technical writer for the software industry, where she received several awards for her work. She received a B.A. in technical and professional writing from San Francisco State University, and is currently pursuing her a Masters degree in Instructional Technologies. Mary lives in Alameda, California with her husband and three children.

Cheryl Danley


Cheryl trained as an agricultural economist, has broad experience in community development, agricultural marketing, natural resource management and policy. She has held positions at Michigan State's Center for Regional Food Systems and Partnerships for Food Industry Development, and been involved in teaching and research in a number of African countries. As a Food and Community Fellow with the Institute for Agriculture and Trade Policy, her areas of focus included community food assessments, local food councils, school food value chains, and equity for socially disadvantaged and underrepresented groups. Cheryl is currently a Program Manager with FoodCorps. Although Cheryl was raised in Detroit, Boston and New York City, she takes great pride in the Florida farmland her family has maintained for five generations.

Polly Hoppin

Polly HoppinUniversity of Massachusetts Lowell Center for Sustainable Production

Polly has East Coast roots, growing up in Massachusetts, going to college in New Jersey, attending graduate school in Maryland (Sc.D. in health policy and management and environmental health sciences), and living and working both in Washington D.C. and Boston.  She has also spent substantial time in Latin America, in particular Nicaragua, Guatemala and Ecuador. Polly has worked in public policy as an environmental advocate for Clean Water Action and World Wildlife Fund, then serving as senior staff to the Science Advisor at the Department of Health and Human Services during the Clinton Administration, and subsequently playing a leadership role in children’s environmental health policy on behalf of HHS and EPA in New England. She has designed and implemented programs for NGOs and government aimed at reducing the use of chemicals that pose risks to human health. Her favorite work combines influencing public policy with designing and implementing programs, and she gets to do both in her current role as Research Professor and Program Director at the University of Massachusetts Lowell Center for Sustainable Production. There, Polly has combined policy research and analysis with leadership of initiatives that seek fundamental reform in public and private sector approaches to mitigating environmental health problems, with a particular focus on asthma. Polly has held leadership positions with the Environment Section of the American Public Health Association and the Massachusetts Public Health Association. She was a founding board member of Protected Harvest, a long-time board member of Clean Water Fund, and now serves on the board of the Center for Whole Communities.

Lupe Martinez

Lupe MartinezCenter on Race, Poverty & the Environment

Guadalupe Martinez is a farmworker-turned-organizer and Assistant Executive Director of the Center on Race, Poverty & the Environment (CRPE) in Delano, California. Lupe started his career in the fields of the San Joaquin Valley. He was recruited to the United Farm Workers union by Cesar Chavez, and served as a key organizer through the grape boycott in the 1980s, including four years in Canada, eventually becoming the National Organizing Director for the UFW. In the early 1990's, Lupe became especially involved in pesticides issues and joined CRPE to do environmental justice work, remaining on the UFW Executive Board until 2006. He represents CRPE on the Steering Committee of Californians for Pesticide Reform, where he has served as well on the executive committee.

Virginia Nesmith

Lupe MartinezFarm worker advocate

Virginia has been an advocate for the rights of farm workers for much of her life, beginning in 1976 with the National Farm Worker Ministry. NFWM engages faith based groups and individuals in support of farm workers across the country who are organizing for a better life. Virginia later served as Executive Director of NFWM for fifteen years, retiring from that position in 2013. She also worked for the United Farm Workers, organizing the public action component of several contract campaigns, and fought with them and others for just immigration reform. She was one of the founders and steering committee members of the Equitable Food Initiative, in which PAN participates. She values the diverse participation of workers, growers and retailers in the EFI towards common goals of improving working conditions, pesticide management and food safety, and was part of another successful multi-stakeholder approach in previous work on economic conversion in her hometown of St. Louis, MO. Virginia graduated from Webster University with a focus on Peace and Conflict Studies and studied in the Master of Divinity Program at Eden Seminary. She admits to being a pretty poor grower of her own food but is hoping she does better in helping develop a large pollinator garden in the community.

Denise O'Brien

Denise O'BrienIowa farmer and organizer

Denise is a farmer and community organizer from Atlantic, Iowa. She and her husband Larry Harris, a fourth generation farmer, have farmed for 36 years on land Larry grew up on—sixteen acres of fruit, vegetables, turkeys and chickens. As a farmer Denise has worked on state, national and international agriculture and conservation policy. She has written and spoken across the U.S. on women in agriculture, organic and sustainable farming and local food systems, and in 2006 ran for Iowa Secretary of Agriculture. Denise is the founder of Women Food and Agriculture Network, organized the Women's Task Force of the Iowa Farm Unity Coalition, directed the Rural Women's Leadership Development Project of PrairieFire Rural Action, Inc., and served as president of the National Family Farm Coalition. She was inducted into Iowa's Women's Hall of Fame in 2000, received the 2004 Iowa Farmer's Union Life Time Achievement Award as well as the 2005 Practical Farmers of Iowa Sustainable Agriculture Achievement Award. O’Brien recently completed a year as a USDA agriculture adviser in Afghanistan

Ana Pardo

Ana Duncan PardoEnvironmental susatainability and immigrant rights advocate

Ana was the Communications Coordinator for Toxic Free North Carolina, a statewide non-profit organization fighting pesticide pollution. At Toxic Free NC, she served as the resident Spanish speaker, media flack, in-house editor and farm worker organizer. Ana spent most of her early life in rural North Carolina, with a brief stint in Montana. She graduated from NC State University in 2005 with a B.S. in Botany. Before joining Toxic Free NC’s staff, Ana worked for the Farm Labor Organizing Committee (FLOC) in the Ohio and North Carolina offices. Ana chairs the Raleigh Citizens’ Advisory Council, and works as a community organizer on issues of environmental sustainability and immigrants’ rights.

Chloe Schwabe

Columbian Center for Advocacy and Outreach

As the Advocacy Associate at the CCAO, Chloe advocates for policies that prevent the proliferation of GMOs and guarantee food security for vulnerable communities around the world. Chloe worked for six years as the Program Manager of the National Council of Churches’ Environmental Health Initiative and coordinated a multi-state campaign to educate people of faith and engage them in advocacy to protect people and the environment from toxic chemicals. Chloe also worked with NGOs committed environmental justice and human rights in Latin America. Chloe also taught bilingual environmental education for two years as an Americorps volunteer. In her free time, she serves on the board of the U.S. Office on Colombia and co-chairs the Colombia Human Rights Committee. She also performs with a theater group in Washington, D.C. Chloe received her MA in Latin American Studies at the University of Texas and bachelors degrees in Environmental Studies and Hispanic Studies at Mills College in California.

Guy Williams

Guy WilliamsG.O. Williams & Associates

Guy Williams is President & CEO of Detroiters Working for Environmental Justice and Principal & Founder of G.O. Williams & Associates, L.L.C., strategic advisors for sustainable community and environmentally related programs. He is well known nationally for his work as a developer of community programming, as a leader in urban redevelopment and remediation projects, and as an advocate for environmental justice and sustainability. Named Michigan Green Leader of the Year in 2014, he is currently Board Chair of Rails-to-Trails Conservancy and the Chair of the Great Lakes Leadership Academy Board of Governors; a board member of Eastern Market Corporation (Detroit); and a member of the Michigan Green Chemistry Roundtable, Great Lakes Integrated Sciences and Assessment Center’s Stakeholder Advisory Committee, and Detroit Future City, among others. Guy is a graduate of Bucknell University.

Nsedu Obot Witherspoon

Nsedu Obot WitherspoonChildren's Environmental Health Network

Nsedu is Executive Director of the Children’s Environmental Health Network in Washington, D,C., a national organization that works to protect the developing child from environmental health hazards and promote a healthier environment. Nse is trained in public health and medical sciences, and brings a broad background in teaching, publishing, presenting and policy advocacy, including testifying before Congress. She is a member of the Institute of Medicine’s Environmental Health Sciences Roundtable, advisor to the Columbia Center for Children’s Health and the Environment, and is appointed to the Maryland Children’s Environmental Health Protection Advisory Council. Nse has worked with the National Institutes of Health-D.C. Initiative to Reduce Infant Mortality at the George Washington University School of Public Health; the Transplant Recipients International Organization; and with the Washington Free Clinic. She is an active member of the American Public Health Association. Nse has a Masters in Public Health from George Washington University.