Overview

• Researchers injected 20 live rhinos with low-dose radioactive isotopes to curb poaching.
• The radioactive horns can be detected by existing radiation monitors at international borders.
• The project aims to devalue rhino horns in the black market by making them poisonous for human consumption.
• South Africa, home to most of the world's rhinos, faces a significant poaching crisis driven by demand in Asia.
• Experts will monitor the rhinos' health over the next six months to ensure the method's safety and effectiveness.