John C. Mutter is a professor at Columbia University with appointments in the Department of Earth and Environmental Sciences and in the School of International and Public Affairs as well as a faculty member of the Columbia Earth Institute. His books include Climate Change Science: A Primer for Sustainable Development (Columbia, 2020). Sonali Deraniyagala teaches in the Department of Economics at SOAS, University of London. Her books include Wave (2013), an acclaimed memoir of her experiences during and after the 2004 Indian Ocean tsunami.