Dagomar Degroot, Senior Columnist

Dagomar Degroot is an expert on climate change, space exploration, and existential risk. His most recent book, Ripples on the Cosmic Ocean (Belknap Press/Viking, 2025), explores how changes in cosmic environments have shaped human history. He is also the author of The Frigid Golden Age (Cambridge University Press, 2018), which examines how societies adapted and even thrived during periods of preindustrial climate change. Degroot is the lead editor of several volumes on the history of climate change, including the forthcoming Oxford Handbook of Resilience in the History of Climate Change. His work appears in leading scientific and historical journals such as Nature and the American Historical Review, and he regularly writes for public audiences in outlets including The Washington Post, Aeon, and The Conversation.