Saiwen Zhang is a Ph.D. student at the O’Neill School of Public and Environmental Affairs at Indiana University. She studies environmental policy with interests in climate adaptation, policy evaluation, and benefit-cost analysis. Her current work focuses on how low-income households adapt to temperature risks and how gaps in climate transition policies affect them. Prior to joining O’Neill, Saiwen earned an M.S. in Environmental Health from the Harvard T.H. Chan School of Public Health.

John Nichols is an MPA candidate at Indiana University’s O’Neill School of Public and Environmental Affairs, concentrating in environmental policy and natural resource management. His interests include climate policy, conservation, and habitat restoration. His research focuses on extreme rainfall attribution, seeking to better understand the effects of climate change on heavy precipitation events. He holds a B.S. in Environmental Science from Nova Southeastern University.

Rafael Abreu is a Postdoctoral Researcher at Indiana University’s O’Neill School of Public and Environmental Affairs. His research focuses on climate attribution and its impacts, particularly on human health. Since 2019, he has also contributed to climate attribution workshops and training for Early Career Researchers in Brazil. He holds a PhD in Meteorology from the University of São Paulo and worked as a postdoctoral scholar at the University of Oxford.

Christopher Callahan is the principal investigator of the IU Climate & Society Lab. He is an interdisciplinary Earth system scientist whose work addresses the socioeconomic impacts of climate change and builds quantitative frameworks for climate accountability. He has provided expertise to courts, policymakers, and the public on climate change and its impacts. He has a PhD from Dartmouth College and worked as a postdoctoral scholar at Stanford University. CV | he/him | ccallah at iu.edu