Where did malaria come from? Analysing over three thousand samples of faeces from gorillas, bonobos and chimpanzees, scientists have found an answer to the origins of a disease that plagues millions of lives each year. But this answer stirs up new questions - why did it jump from the gorilla into us? And will it continue to do so? Smitha Mundasad talks to Professor Paul Sharp to find out more... Like this podcast? Please help us by supporting the Naked Scientists