Meet the Center for Biological Diversity's Population and Sustainability Team:
Stephanie Feldstein, Population and Sustainability Director, leads the Center’s work to highlight and address threats to endangered species and wild places from runaway human population growth and overconsumption. Previously Stephanie worked for, where she helped hundreds of people start and win online campaigns to protect wildlife. She holds a bachelor's degree from the University of Michigan and has years of experience in organizing, outreach and communications, with a focus on animals and the environment.

Contact: Portland, OR, 734.395.0770,


Sarah Baillie, Endangered Species Condoms Coordinator, manages our Endangered Species Condoms project and coordinates events for Pillow Talk, an outreach program geared toward museum and science center visitors. She holds a bachelor’s in wildlife conservation from the University of Delaware and a master’s in biology from Villanova University; she’s also working toward a master’s of public administration at the University of Arizona. Before joining the Center she worked as an environmental educator and lab coordinator.

Contact: Tucson, AZ, 520.623.5252 ext. 308,


Kelley Dennings, Population Campaigner, helps lead the Center’s work to highlight and address the connection between exponential human population growth and threats to endangered species and wild places. Before joining the Center, she worked in waste reduction and forest conservation. She is the founding president of the Social Marketing Association of North America, which works to advance behavior change for social good, and is a certified family planning health worker. She holds a bachelor’s degree in natural resources from N.C. State and a master’s degree in public health from the University of South Florida.

Contact: Washington, DC, 919-355-8102,


Jessica Herrera, Media Specialist, helps coordinate and plan the Center’s media and communications strategy for the Population and Sustainability Program. She brings expertise from her diverse writing, labor organizing and academic experiences. Prior to joining the Center, she was a deputy press secretary for the Sierra Club. She holds a master’s degree in international studies from the Johns Hopkins School of Advanced International Studies.

Contact: Tucson, AZ, 520.345.5726,


Jennifer Molidor, Senior Food Campaigner, drives the Population and Sustainability program's Earth-friendly Diet initiatives related to meat production and consumption, industrial agriculture, overconsumption and population growth, and the impact of our food systems on wildlife and the planet. She helps lead our sustainable food initiatives, including the Take Extinction Off Your Plate campaign. Before joining the Center in 2015, she worked for several years on a number of food, wildlife, and environmental campaigns as the staff writer for the Animal Legal Defense Fund; she holds a Ph.D. in English and Irish studies from the University of Notre Dame.

Contact: Santa Rosa, CA,


Shiva Patel, Renewable Energy Campaigner, co-leads the Population and Sustainability program’s renewable-energy work, with a focus on distributed community solar. Before joining the Center he worked on advocating, designing and building an equitable, inclusive community-owned solar program for low-income residents and communities of color in Alameda County, California, and more generally is interested in organizing a just transition to a non-extractive, regenerative green economy. He has a bachelor’s degree in environmental economics and policy, as well as interdisciplinary studies in food and energy sovereignty.

Contact: Washington, DC, 321.230.1277,


Greer Ryan, Renewable Energy and Research Specialist, provides scientific and policy support to the Center’s Population and Sustainability team. She holds a bachelor’s in molecular environmental biology from the University of California at Berkeley and a master’s in environmental science from the School of Public and Environmental Affairs at Indiana University. In addition to interning with the Center in 2013 before she joined us on staff, she worked as a research assistant in several environmental science labs and as an intern at NRDC.

Contact: Portland, OR, 812.345.8571,


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