The global rhino population has fallen by 95% since 1900, mainly due to poaching. Now an atomic approach is being used to stop the poachers in South Africa by placing radioactive material into the horns of rhinos. We journey to the South African bush to meet the scientists - as well as the rhinos being protected.

People Fixing The World from the BBC is about brilliant solutions to the world's problems. We'd love you to let us know what you think and to hear about your own solutions. You can contact us on WhatsApp by messaging +44 8000 321721 or email peoplefixingtheworld@bbc.co.uk. And please leave us a review on your chosen podcast provider.

Presenter: Myra Anubi Reporter: Ayanda Charlie Producer: Katie Solleveld Editor: Jon Bithrey Sound mix: Annie Gardiner

(Image: A rhino with its face covered, being guided by two vets in the Waterberg reserve, South Africa, Ayanda Charlie)

From Adversity to Abundance Trailer