"A thoughtful examination of the machinery of extinction . . . By turns harrowing and elegiac, thrilling and informative." --Michiko Kakutani, The New York TimesThree or four times an hour, eighty or more times a day, a unique species of plant or animal vanishes forever. And yet, every so often one of these lost species resurfaces. "Having adventures most of us can only dream about" (The Times-Picayune), Scott Weidensaul pursues stories of loss and recovery, of endurance against the odds, and of surprising resurrections.