A.J. Jacobs

A.J. Jacobs is a New York Times bestselling author, the editor at large at Esquire magazine, and human guinea pig. He has written for The New York Times, Entertainment Weekly, and New York magazine and has appeared on several national television shows that include Oprah, Good Morning America, and The Today Show. AJ is also a periodic commentator on NPR's Weekend Edition Saturday, where he discusses important facts, such as the fact that opossums have 13 nipples.