South African scientists launched the Rhisotope Project, injecting five rhinos with harmless radioactive isotopes to deter poaching. The isotopes make rhino horns detectable by radiation detectors at borders and airports, aiding in the apprehension of traffickers. This follows successful trials on 20 rhinos last year, showing the isotopes pose no harm to the animals while effectively triggering alarms even in large shipping containers. The initiative aims to combat the severe decline in rhino populations due to poaching, with South Africa losing approximately 500 rhinos annually.

Prepared by Olivia Bennett and reviewed by editorial team.