The Freakonomics Radio podcast is now the No. 1 podcast on iTunes; it’s also available for download via RSS. Elsewhere, Dubner answered questions for PopMatters. Meanwhile, Freakonomics and SuperFreakonomics are the No. 2 and No. 6 books, respectively, on U.S. college campuses. In the real world, SuperFreakonomics has entered its 15th week on the N.Y. Times best-seller list, while Freakonomics is in its 23rd week on the paperback list. Blog posts about the SuperFreakonomics global-warming controversy are collected here.