His book about breeding racehorses is now out in paperback. It's called Stud: Adventures in Breeding. Stud explores the process of creating champions, from the farms of Kentucky, where studs command $500,000 a pop, to the horse auctions, where the world's richest people compete for the top yearlings. Conley is an editor at The New Yorker. This interview first aired March 25, 2002.