Find out how to sort the sheep from the goats, discover the opposite of Tarzan, and meet the telescope that points straight through the Earth. With Jimmy Carr, Colin Lane…

Sandi Toksvig runs the numbers with Colin Lane, Sarah Millican, Noel Fielding and Alan Davies.

Stephen Fry and Alan Davies are joined by Jo Brand, David Mitchell and Colin Lane.

From lonely whales to larval locomotives, Stephen Fry takes a look at the animal kingdom themed around the letter L. With Sarah Millican, Ross Noble, Colin Lane and Alan Davies.

Stephen Fry looks at a whole kit and kaboodle of K topics. With Noel Fielding, Ross Noble, Colin Lane and Alan Davies.