Bill McKibben

William Ernest McKibben (born December 8, 1960) is an American environmentalist, author, and journalist who has written extensively on the impact of global warming. He is the Schumann Distinguished Scholar of environmental studies at Middlebury College and leader of the climate campaign groups 350.org and the Third Act Movement. He has authored a dozen books about the environment, including his first, The End of Nature (1989), about climate change, Falter: Has the Human Game Begun to Play Itself Out? (2019), and Here Comes the Sun (2025) about the state of the environmental challenges facing humanity and future prospects.