Extinct species don’t usually get a do-over…but don’t tell that to the scimitar-horned oryx. Erased from the wild for three decades, these desert antelope are back in the Central African country of Chad with a thriving herd of over a hundred individuals. But how did this happen? We visit the Smithsonian's National Zoo and Conservation Biology Institute and a remote animal reserve in the United Arab Emirates to reveal the twists and turns of this amazing comeback story.