Meet National Geographic photographer Joel Sartore. For the past decade, he’s been on a mission to photograph every endangered animal before they are extinct. The photos are stunning and he’s assembled them into a new book called, The Photo Ark: Vanishing: The World’s Most Vulnerable Animals. He shares some of his favorite photos with Soledad and explains why he thinks these simple, yet haunting images can get more people to care about the extinction crisis. Photo Credits: Joel Sartore, National Geographic Photo Ark

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