A.J. JACOBS is a New York Times bestselling author and editor at large of Esquire.

He is the author of The Know-It-All, a bestselling memoir of the year he spent reading the entire Encyclopedia Britannica in a quest to become the smartest person in the world; The Year of Living Biblically, a book about his life as the ultimate biblical man who followed every rule of the Bible, from the Ten Commandments to stoning adulterers. His most recent book is The Guinea Pig Diaries, about several monthlong experiments including the time he outsourced his entire life to India.

In addition to his position at Esquire, Jacobs has written for The New York Times, New York magazine, Entertainment Weekly, and Dental Economics magazine, one of the top five magazines about the financial side of toothcare. He has also been featured as a commentator on NPR, and has appeared on Oprah, The Today Show, and Good Morning America.