Adam Higginbotham talks about the history of the Space Shuttle program and the decisions that made the Challenger explosion almost inevitable. Higgenbotham is a journalist and contributing writer for the New Yorker, Wired, and the New York Times. His book Midnight in Chernobyl won the Andrew Carnegie Medal for Excellence in Non-Fiction and was selected as one of the 10 best books of 2019 by the New York Times. He discusses his new book Challenger: A True Story of Heroism and Disaster on the Edge of Space.