JOHANNESBURG - South African authorities say at least 96 rhinoceros have been killed so far this year, as rampant poaching for their horns to sell to buyers in Asia continues.
From the 1990s to 2007, rhino killings in South Africa by poachers averaged about 15 a year. However, the number has soared as buyers in Asia now pay the U.S. street value of cocaine for rhino horn.
Rhino horn is made of keratin, a tough protein found in human fingernails. There's a belief in Asia that taking ground-up horn cures diseases. However, no medical evidence supports that.