The extinction of the dinosaurs may have been the result of an asteroid hitting Earth or an Ice Age freezing them to death. Today, animals such as elephants, ze

A short description of the extinct animal along with a color drawing.

In the twenty-first century, because of climate change and other human activities, many animal species have become extinct, and many others are at risk of extin

ONE OF THE NEW YORK TIMES BOOK REVIEW'S 10 BEST BOOKS OF THE YEAR A major book about the future of the world, blending intellectual and natural history and fiel

This book of photography represents National Geographic's Photo Ark, a major cross-platform initiative and lifelong project by photographer Joel Sartore to make