WINNER OF THE PULITZER PRIZEONE OF THENEW YORK TIMES BOOK REVIEW'S 10 BEST BOOKS OF THE YEARANEW YORK TIMESBESTSELLERA NATIONAL BOOK CRITICS CIRCLE AWARD FINALISTA major book about the future of the world, blending intellectual and natural history and field reporting into a powerful account of the mass extinction unfolding before our eyesOver the last half a billion years, there have been five mass extinctions, when the diversity of life on earth suddenly and dramatically con