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Isotopes can be detected at airports and borders even in large containers and are harmless to the animals
A South African university has launched an anti-poaching campaign to inject the horns of rhinoceroses 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 in what the university hopes will be the start of a mass injection of the declining rhino population, which they are calling the Rhisotope Project.
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