Nicolas de Warren is Associate Professor of Philosophy at Pennsylvania State University. Among his numerous publications in phenomenology, history of philosophy, literature, and Continental thought, he is the author of A Momentary Breathlessness in the Sadness of Time: On Krzysztof Michalski's Nietzsche (2018) and co-editor of Philosophers at the Front. Phenomenology and the First World War (2018). Ted Toadvine is the Nancy Tuana Director of the Rock Ethics Institute and Associate Professor of Philosophy at Penn State University. He specializes in contemporary European philosophy, especially phenomenology and recent French philosophy, and the philosophy of nature and environment. He is author of Merleau-Ponty's Philosophy of Nature (Northwestern, 2009) and editor or translator of six books, including The Merleau-Ponty Reader (with Leonard Lawlor, Northwestern, 2007), Merleau-Ponty: Critical Assessments (Routledge, 2006), Eco-Phenomenology: Back to the Earth Itself (with Charles Brown, SUNY, 2003), and Merleau-Ponty's Reading of Husserl (with Lester Embree, Springer, 2002). He is Editor-in-Chief of the biannual journal Environmental Philosophy , co-editor of the annual journal Chiasmi International , and co-director of Springer's Contributions to Phenomenology Series. He serves on the Board of Directors for the Center for Advanced Research in Phenomenology, the International Association for Environmental Philosophy, and the International Merleau-Ponty Circle.

His current research addresses the philosophical and ethical significance of deep time, environmental apocalypticism, geomateriality, and the diacritics of life.