This week, the Professor of Ignorance John Lloyd and his curator Humphrey Ker welcome the art historian and former director of the Greenwich Observatory Dr Kristin Lippincott; comedian, chat show host and blogger Richard Herring and animal locomotion expert Dr Christofer Clemente. Topics for illumination include Time, inspiration, writer's block, sticky ants' feet, Russia's Greatest Love Machine lizards doing wheelies and the most controversial moustache in history.

The show was researched by James Harkin, Molly Oldfield and Stevyn Colgan of QI.

The producers were Richard Turner and Dan Schreiber. Show less