Scientists Inject Radioactive Material Into Live Rhino Horns Making Them Poisonous to Humans
![](https://i.kinja-img.com/image/upload/c_fit,q_80,w_636/485c52d5f7a179815cf047e180d2e9e9.jpg)
Scientists in South Africa are now injecting the horns of live rhinos with non-toxic radioactive isotopes to make the horns unfit for human consumption and allow for easier tracking at international border crossings, according to a press release from the University of the Witwatersrand in Johannesburg.