👉How science is stepping in to save the northern white rhino from extinction The last male northern white rhinoceros, Sudan, died on March 19 at the age of 45, at Ol Pejeta Conservancy in Kenya, where he spent the last nine years under the watch of a 24-hour armed guard. There was a time when northern white rhinos could be found in southern Chad, the Central African Republic, southwestern Sudan, northwestern Uganda, and the Democratic Republic of the Congo. In 1960, more than 2,000 were remaining, according to a World Wildlife Fund report. The number shrank to 15 in 1984 as they were hunted for their horns, an important ingredient in traditional Vietnamese medicine. Only two northern white rhinos remain now: Sudan’s daughter Najin and granddaughter Fatu, neither of whom will be able to carry a pregnancy to term. Where traditional conservation methods failed to save this subspecies, science is stepping in. From the sperm of four northern white rhino bulls and living...