One of the world’s most critically endangered animals is about to get a little star-studded support. Over the next few months, as many as 18 celebrities from around the world will travel to Kenya’s Ol Pejeta Conservancy, where they will have the opportunity to meet one of the planet’s rarest animals: Sudan, the last male northern white rhino. Only five northern white rhinos remain alive, and Sudan is 42. Three of them live at Ol Pejeta. Two other elderly females live at zoos in San Diego and the Czech Republic. None of the animals is capable of breeding naturally. Ol Pejeta is exploring artificial means of reproduction to preserve the species.