Bill McKibben is an environmentalist. His 1989 book The End of Nature is regarded as the first book for a general audience about climate change, and has been translated into twenty-four languages. He’s gone on to write twenty books, and his work appears regularly in periodicals from the New Yorker to Rolling Stone. McKibben helped found 350.org, the first global grassroots climate campaign, which has organized protests on every continent, including Antarctica, for climate action. He is also the founder of Third Act, which organizes people over the age of 60 for action on climate and justice. He lives with his wife, the writer Sue Halpern, in the mountains above Lake Champlain.