In a sense, Ted Conover has been on the road much of his writing life. For his first book, Rolling Nowhere, he rode the rails with hobos across America. For his second book, Coyotes, he spent a year crossing the southern border with people on their way into the U.S. looking for a better life. His next two books, Whiteout (about Aspen, Colorado) and Newjack (about Sing Sing prison) kept him settled. But in his latest book, The Routes of Man: How Roads Are Changing the World and the Way We Live Today, he’s back on the move, exploring roads from East Africa to the West Bank, from the Andes to the Himalayas. I asked about it via email.