Wildlife conservation: South Africa' s rhino ranch keep poachers away, but at a cost

South Africa's largest private rhino breeder says he has kept the protected species safe from poachers for four and a half years by selling horns legally. Rhino horn is used in traditional Chinese medicine and prized as a status symbol in other parts of Asia, making trade in it lucrative and poaching, which involves killing what is a protected species, a widespread problem.