Valerie Trouet is a paleoclimate scientist, an author, and a speaker. As a professor in the Laboratory of Tree-Ring Research at the University of Arizona, Dr. Trouet uses the rings in trees to study past climate and how it has influenced ecosystems and human systems. She is the author of In the Circle of Ancient Trees, Tree Story, and the thriller Cuberdon, in addition to numerous essays, papers, and podcasts. Dr. Trouet has been widely interviewed on everything from the New York Times to Radiolab.