The Giraffes Nobody Noticed

For decades, we thought there was just one species of giraffe. There are actually four, and it took nearly ten years of research to prove it.     Peter Allison sits down with Stephanie Fennessy, co-founder of the Giraffe Conservation Foundation, to talk about the discovery that changed what we thought we knew, why giraffes are far more vulnerable than most people realise, and what it will take to protect one of Africa's most iconic animals.