Rare White Rhino Dies

It's a race against time for the rare Northern White Rhino - with one of only 4 remaining animals dying in captivity in at the San Diego Zoo today. Nola who was 41 had to be put down after developing an infection.Can scientists develop a workable test tube fertilisation method before the last three die?

(PIcture -Nola receiving medical care at San Diego Zoo in 2014. REUTERS/Ken Bohn/San Diego Zoo Safari Park)