This article is adapted from Joel Sartore’s new book, Vanishing, published by National Geographic Books. Joel Sartore has been photographing animals for his Photo Ark project for 13 years.

You’ve heard of birds flying south to escape the winter, but do you know how chipmunks spend the colder months?

National Geographic The photos capture animals, people, and nature coexisting in fascinating ways. Among the 20 images is a shot of a rare black tiger, a big cat that gets its name from its extra ...