A South African university has launched an anti-poaching campaign to inject the horns of rhinos with radioactive isotopes that it says are harmless for the animals but can be detected by customs agents. Under the collaborative project involving the University of the Witwatersrand, nuclear energy officials and conservationists, five rhinos were injected Thursday in what the university hopes will be the start of the mass injection of the declining rhino population. Last year, about 20 rhinos at a sanctuary were injected in trials. The radioactive isotopes even at low levels can be detected at airports and borders and lead to the arrest of poachers and traffickers.
Scientists in South Africa are making rhino horns radioactive to fight poaching
