Rhinos in South Africa will have their horns injected with radioactive material to deter poachers. A team from the University of the Witwatersrand (Wits) said the rhinos would not be harmed by a ...

From radioactive rhino horns in South Africa to starving children in Gaza, a deadly midair collision over D.C., and a ...

Conservation scientists in South Africa are injecting rhino horns with radioactive isotopes. The doses are too weak to harm ...