IVF 'best option' to save white rhino population

The chief executive of the Ol Pejeta Conservancy in Kenya, Richard Vigne, has told the BBC that in-vitro fertilisation (IVF) is the best option to save the northern white rhinoceros.

Only three northern white rhinos remain in the world, after Nola, a 41-year-old female, was put down on Sunday after her condition deteriorated after surgery.

She had been living at San Diego Zoo Safari Park since 1989 but the remaining three rhinos are kept closely guarded at the Ol Pejeta Conservancy.

Footage courtesy of San Diego Zoo.