Have you ever wondered why more salespeople buy BMWs than other cars? Or why a name’s popularity grows after a hurricane of that name hits? Jonah Berger has the answers. A marketing professor at the Wharton School at the University of Pennsylvania and the New York Times best-selling author of the books "Contagious: Why Things Catch On" and "Invisible Influence: The Hidden Forces That Shape Behavior," Berger has spent the last decade studying how social influence works, why certain ideas and products catch on, and what we can do to make ourselves more influential. He shares with audiences the keys to harnessing this “influence” to forge great partnerships, sell slow-moving products, and be more intentional with business strategies. His work is regularly published in top-tier journals, he consults for a variety of Fortune 500 companies, and popular outlets like Harvard Business Review often cover his work.

Mark Jenkins is a field staff writer for National Geographic Magazine and writer-in-residence at the University of Wyoming. In 2009 he won the National Magazine Award for photojournalism, along with his colleague Brint Stirton, for their National Geographic story “Who Murdered The Mountain Gorillas.” Jenkins was “The Hard Way” columnist for Outside magazine for eight years. He is the author of three books: The Hard Way (Simon and Schuster, 2002), To Timbuktu (William Morrow, 1997), and Off the Map (William Morrow, 1992). He resides in Laramie, Wyoming, with his wife and two daughters.