Staff and Interns


Tanja Srebotnjak, Director (she/her/hers)

Class of ’66 Environmental Center | Room 206 | 413-597-4197 | [email protected]

Tanja has worked on sustainability strategy and operations and in a variety of settings.  She obtained undergraduate and graduate degrees in statistics from Dortmund Technical University, Germany and the University of Auckland, New Zealand before joining the UN Statistics Division to work on environmental statistics and indicators. Seeing the growing need for data-driven sustainability assessment and decision-making, she pursued doctoral research in environmental statistics and policy from the Yale School of the Environment and was the director of the Yale-Columbia Environmental Performance Index (EPI). Since then she has led research, education and strategic initiatives to address sustainability, climate and environmental health issues in academia and K-12 education as well as for environmental advocacy and think tank organizations in the U.S. and Europe.

Mike Evans, Deputy Director (he/him/his)

Class of ’66 Environmental Center | Room 208 | 413-597-4462 | [email protected]

Mike joined the Zilkha Center team in 2014.  Prior to his time at Williams, he worked in nonprofits focusing on food security, youth empowerment, sustainable agriculture, and food justice in Boston, Austin, and Salt Lake City.  Mike received a B.A. in African and African American Studies from Dartmouth College and a M.A. in Community Leadership from Westminster College.

Christine Seibert, Sustainability Coordinator (she/her/hers)

Class of ’66 Environmental Center | Room 207 | 413-597-4422 | [email protected]

Christine has a background in environmental education, student engagement, and municipal greenhouse gas accounting. One of her greatest joys in life is seeing young people empowered to make positive change in their communities. She holds a B.S. in biology from Gordon College and is pursuing a masters in sustainability at Harvard Extension School.

DeeDee Lewis, Administrative Coordinator (she/her/hers)

Class of ’66 Environmental Center | Room 108 | 413-597-2346 | [email protected]

2024 Summer Interns