Young maths whizz Sbahle Zwane, has become popular on social media with his incredible skills. We speak to him and his mother as well as Professor Kate Cockcroft from Wits University about the origins of intelligence. In Unscience we find out about fainting goats. Later in the show, Dr Shirley Kokot explains how gifted children cope socially and later in life. In our science news we speak about life on Venus and the how the centre of the earth is squishier than previously thought.