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. (AP Photo/Denis Farrell)
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