Staff

Toxicologist
Alexis Temkin, Ph.D.

Originally from Chappaqua, N.Y., Alexis recently moved to Washington, D.C., to join the investigative science team at Environmental Working Group. She earned her bachelor’s degree in biological sciences from Connecticut College in 2010. Alexis began her research career at Columbia University Medical Center, working as a lab technician studying the molecular mechanisms responsible for environmental influence on gene regulation. She then moved to beautiful Charleston, S.C., to attend the Medical University of South Carolina, where she earned a Ph.D. in marine biomedicine and environmental sciences. She studied how exposure to environmental chemicals during development can influence adult disease, specifically obesity and metabolic syndrome. In her spare time, you can probably find Lexi in a yoga studio, exploring the closest outdoor park, attending a dance performance or cooking vegetables.

Social Media Manager
Isang Udokwere

Isang is a D.C.-area native with a diverse creative background. After spending some time in New York working in the music industry, he returned to the Washington area to work on social media for BlackVoices.com, then ventured on to some notable brand strategy firms and “Silicon Hill” start-ups. He is a firm believer in the idea that the world is having a perpetual digital conversation, and that social media is the only way for organizations to participate. When he isn’t creating social media content for EWG, you can likely find Isang at a concert, modern art museum or in a recording studio. 

Nutritionist
Dawn Undurraga

Dawn has witnessed first-hand how our current food system affects people's lives, and she is committed to shaping policies for a more sustainable and healthful future, informed by research. She came to EWG from a community health center in Boston, where she proudly served as an Albert Schweitzer fellow. Previously she interned at the USDA's Center for Nutrition Policy and Promotion during the formulation of the 2010 Dietary Guidelines for Americans, helped prepare and promote healthy school meals at D.C. Central Kitchen and worked on both clinical and epidemiological cancer studies in California. She holds an M.S. in nutrition communication from Tufts University and a B.S. in nutritional sciences and toxicology from UC Berkeley. After hours, Dawn can be found chasing after her son or teaching nutrition or kids "cooking" classes.  

VP and Editor in Chief
Bill Walker

Bill has more than three decades’ experience as a journalist and activist. He began his career on a small weekly in his home state of Texas and advanced to the Fort Worth Star-Telegram, where he wrote news and features from across the South. He moved to The Denver Post, roaming the vast reaches of the Rocky Mountain West, then to The Sacramento Bee as national and international correspondent.

His travels exposed him to fragile places under assault from industrial development and communities suffering from corporate exploitation. Determined to fight injustice rather than just write about it, he joined the environmental movement as a press officer for Greenpeace. He coordinated news coverage for dozens of the organization's signature direct actions and headed Greenpeace's national media department before becoming communications director for the California League of Conservation Voters.

In 1996 he opened EWG’s California office, building a team that generated headline-making reports on toxic chemicals, pesticides, water subsidies and more. After 12 years as EWG’s Vice President/West Coast, he opened a consulting practice working with The Story of Stuff, The Breast Cancer Fund, Friends of the Earth and many other groups. In 2015 he rejoined EWG, where he works with scientists and researchers to develop, write and edit reports.  

Bill lives in Berkeley and is raising three teenagers to question authority except when he tells them to clean their rooms. 

VP, Digital Strategies
Maura E. Walsh

Maura Walsh is a digital communications expert with 15 years of experience in direct email marketing, content marketing, fundraising and advocacy. She oversees EWG’s digital program, including its websites, grassroots fundraising and advocacy work.

Prior to joining EWG, she was a Senior Vice President at Anne Lewis Strategies, where she worked with clients such as the United Service Organization, EWG, The Clinton Foundation, The Chesapeake Bay Foundation and WETA to design and execute record-setting online marketing and fundraising programs. Maura is responsible for developing best-of-breed strategies that are now widely used by nonprofit and political organizations to drive their fundraising and advocacy, including the contribution up-sell and the “$5 ask.” During her tenure, she helped the firm’s clients raise more than $240 million online and convert millions of activists across a wide spectrum of causes.

Prior to joining Anne Lewis Strategies in January 2007, Maura was the director of account management for Plus Three, a technology company that provides website, email and fundraising technologies for nonprofit and political clients.

Maura also served as an Internet strategist for APCO Worldwide, a public affairs and public relations company, and as a senior account manager for Bigfoot Interactive (now Epsilon Interactive), a leading email marketing agency, where she managed direct email campaigns for the company’s top accounts including Capital One, H&R Block and MTV.

Digital Journalist
Emily Wathen

A graduate of Syracuse University and the Maryland Institute College of Art, Emily has a background in film production, photography and transmedia. Emily co-produced the documentary feature, PROJECT: ICE, a film that examines changing ice levels on the Great Lakes. Her work has been featured at the Environmental Film Festival in Washington, D.C., the Canada International Film Festival, Freep Film Festival, and others. Emily previously worked with the communications teams at the Center for American Progress and EarthShare and has independently produced multimedia projects for organizations including Johns Hopkins, USAID, and the National Democratic Institute. Emily creates original video and digital media for EWG and is based in the Washington, D.C. office.

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