This week, the Chasers journey to America to pit their wits against Kanzi, a Bonobo ape who is able to communicate with humans by using a series of pictures and symbols on a Lexigram, and in addition to this is also thought to be one of the first Apes to show an understanding of spoken English. They also meet a chimpanzee memory wizard, a 25-year-old gamer orang-utan called Katie and that well-known genius of the ocean, the dolphin. And, using their hearts as well as their heads, they will confront the moral challenge: that if humanity fully understood animal intelligence, would we treat them differently?

Anne Hegerty, Shaun Wallace and Mark Labbett set out to uncover the surprising cognitive abilities of children. Travelling across the UK, the trio take on child geniuses before delving deeper into IQ, emotional intelligence and creativity.

Travelling across Japan, Anne, Shaun and Mark come face-to-face with the future of intelligence, from a self-solving puzzle cube and facial recognition technology to cutting edge robots that are being used in a wide variety of industries.