South African researchers test use of nuclear technology to curb rhino poaching

A sedated rhino is prepared to be tranquilized, before a hole is drilled into its horn and isotopes carefully inserted, at a rhino orphanage in the country's northern province of Limpopo, Tuesday, June 25, 2024. Researchers have started the final phase of a research project aimed at reducing rhino poaching by inserting radioisotopes into rhino horns to devalue one of the most highly trafficked wildlife commodities.

South Africa has the largest population of rhinos with an estimated 16,000, making it a hotspot with over 500 rhinos killed yearly. While the idea has received support from some in the industry, the researchers have had to jump many ethical hurdles posed by critics of their methodology.

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