Sara Tjossem is a historian of science, focused on the history of ecology and its intersections with social and environmental movements.  She is Associate Director of Curriculum in the Program on Environmental Science and Policy at SIPA, and teaches environmental history and policy. 

Her research is on the interplay of science and society, particularly the development of environmental policy.  She has written two books on the development and organization of scientific cooperation: Fostering Internationalism through Marine Science (2017) and The Journey to PICES:  Scientific Cooperation in the North Pacific (2005).  She has served on the editorial board of The History and Philosophy of the Life Sciences since 2005.