Richard Sobol's photographs appear regularly in Time, the New York Times, and National Geographic, among others. He has written numerous books for young adults, including books on whales, mountain gorillas, animal conservation, and African wildlife.

Exposing children to a diverse range of literary and informational texts, the Core Concepts program helps develop important literacy and cognitive skills necessary to meet many of the Common Core State Standards.

Gold Light and Gold Ray are the only known pair of elephant twins in the world! Photojournalist Richard Sobol has masterfully captured the twins' playfulness, as he shows the twins feeding, bathing, napping, and learning with their trainer Pai. Elephant Twins transports readers to Ban Tha Klang, Thailand, to play with the baby elephants and meet this unique pair of brothers!