Can legalised trade save Africa's last rhinos from poaching?

A South African court decision to lift a ban on trading rhino horn has divided conservationists. In the race against poachers a solution must be found quickly - but the wrong decision could be catastrophic

Time is fast running out for the rhinoceros. In their final stronghold of South Africa, rampant poaching for horn threatens to wipe out the last 20,000 southern white rhinos in less than two decades.

Among conservation scientists, there is deep uncertainty over how best to respond to the poaching crisis. Many express reserved support for the controversial idea of a legalised international trade in rhino horn.