In Kenya, four armed rangers are working around the clock to guard Sudan, a 42-year-old rhinoceros who’s believed to be the last male northern white rhino on earth. Sudan has been living at Ol Pejeta Conservancy with three females of his species, Najin, Fatu and Suni, since 2009. The rhinos were moved there with the hope that they’d reproduce if they were living in more natural conditions. So far, that hasn’t happened, but an international team of experts is working on helping to facilitate Sudan’s reproduction. “In Kenya, we have made progress in the last eight to 12 months and, touch wood, it will continue,” said Richard Vigne, the conservancy’s CEO. — Read it at ABC News