Physicist Brian Cox and comedian Robin Ince return for the fourth series of the Sony Radio Academy Gold Award-winning BBC Radio 4 show in which they take a witty, irreverent and unashamedly rational look at the world according to science.

In the first episode, 'What Don't We Know?', the Infinite Monkeys will be asking what don't we know, do we know what we don't know, does science know what it doesn't know, and are there some things that science will never be able to know? Joining them on stage are the comedian Paul Foot, biologist Professor Steve Jones and cosmologist and science writer Marcus Chown.

In Episode 2, '6 Degrees', Brian Cox and Robin Ince are joined on stage by special guest Stephen Fry and science writer Simon Singh to find out whether we really are only 6 degrees of separation from anyone else.

In Episode 3, 'So You Want to Be an Astronaut?', Robin Ince and Brian Cox are joined by comedian Helen Keen and space medicine expert Dr Kevin Fong to discuss the future of human space travel.

In the fourth episode of this series, 'Is Cosmology Really a Science?', Robin Ince and Brian Cox are joined on stage by 'V for Vendetta' author and legendary comic book writer Alan Moore, cosmologist Ed Copeland, and science broadcaster Dallas Campbell to ask whether cosmology is really a science.

Episode 5 is a special edition, recorded at the Glastonbury Festival, in which Robin Ince and Brian Cox aim to prove that science really is the new rock n' roll. They are joined on stage by musicians Billy Bragg and Graham Coxon, comedian Shappi Khorsandi, and scientist Professor Tony Ryan.

In the final episode of the series, 'Science v The Supernatural: Does Science Kill the Magic?', Robin Ince and Brian Cox are joined on stage by actor and magician Andy Nyman, psychologist Richard Wiseman and neuroscientist Bruce Hood as they take on the paranormal.

Winner of a Sony Radio Academy Gold Award for Best Speech Programme: 'A brilliant way of being both innovative and instructive, bringing humour to what some will see as a dull subject. It's listenable, educational and brings a whole new audience to both the subject and the station' - The Judges