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.

EXCLUSIVE: National Geographic has handed renewals to two of its Emmy-nominated series, Trafficked: Underworlds With Mariana ...

Episode one, entitled "Pups, Kitties, And Three Little Piggies," will air on National Geographic WILD at 9pm ... and adorable pups as the docs help animal owners welcome those little litters ...

The family-friendly series taps into the passion and expertise of world-renowned scientists and conservationists, including National Geographic Explorer and marine biologist Dr. Pablo Borboroglu ...

Blake Lively narrates National Geographic's "Secrets of the Penguins," the latest installment of its Emmy Award-winning franchise, streaming April 21.