Rare: Creatures of the Photo Ark

Rare: Creatures of the Photo Ark travels with renowned photographer Joel Sartore as he photographs at-risk and rare species in the wild, in zoos, and in nature preserves. The 3-part series explores his Photo Ark initiative, which aims to document every species at risk of extinction. This captivating and visually stunning special will reveal why ensuring species future matters to us all. (PBS)