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This expanded version builds on the original Passport system with more space and flexibility

which introduces more than a dozen of the most dramatic events

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The Sixth Extinction: An Unnatural History HUTR Each spread appears to beWINNER OF THE PULITZER PRIZE ONE OF THE NEW YORK TIMES BOOK REVIEW'S 10 BEST BOOKS OF THE YEAR A NEW YORK TIMES BESTSELLER A NATIONAL BOOK CRITICS CIRCLE AWARD FINALIST A 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 eyes Over the last half billion years, there have been five mass extinctions, when the diversity of life on