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Africa's poaching problem

Policeman look on as a protester carries a placard calling for an end to rhino poaching, which threatens the survival of rhino species, outside the Chinese embassy in Pretoria September 22, 2011.

Africa's poaching crisis

Africa's

biggest animals were poached in near record numbers in 2012, with

surging demand for horn and ivory from Asia driving the slaughter of

rhinos and elephants. Poachers have killed hundreds of rhinos in South Africa and thousands of elephants, according to environment ministry figures.