(Reuters) – One of only six northern white rhinoceros left on earth died over the weekend at a San Diego zoo, bringing the species closer to extinction, zoo officials said on Monday. Angalifu, who was about 44 years old and being treated for age-related conditions, died on Sunday, according to the San Diego Zoo Safari Park. The world's only known remaining northern white rhinos are an elderly female still at the Safari Park, one at a zoo in Europe and three in Africa, the California zoo said in a statement. …
