Artificial insemination

Ol Pejeta ranger and head care giver Zacharia Mutai, caresses 24-year-old Fatu (right) next to her mother 35-year-old Najin (left), the last two northern white rhinos in the world, in Ol Pejeta conservancy, Laikipia county, earlier this month. Najin and her daughter Fatu are the only northern white rhinos left on Earth. The clock is ticking before they become the latest in a long line of animals that humans have poached to extinction. But Fatu still produces viable eggs, making her a candidate for in-vitro fertilization.