b'Our co-host is Grit author Angela Duckworth, and we learn fascinating, Freakonomical facts from a parade of guests. For instance: what we all get wrong about Darwin; what an iPod has in common with the \\u201chell ant\\u201d; and how a \\u201cmemory athlete\\u201d memorizes a deck of cards. Mike Maughan is our real-time fact-checker.'