We welcomed author and environmental activist Bill McKibben to the Pop-Up. In conversation with director Miranda Massie, Bill shared insights from his wide-ranging work on climate, which includes founding Third Act, an advocacy group elevating the activism of people 60 and up; co-founding 350.org, the first global grassroots climate campaign; writing 20 books, including the first book for a general audience about climate change; and contributing regularly to the New Yorker, Rolling Stone, and more. The dialogue was followed by ample time for audience Q&A.