Programmes about secret clubs, hidden messages, mischief and the cult of consumerism.
Ross Sutherland explains how he invented a secret society by accident.
Writer Michael Smith explores the uncertain future of masculinity.
On April Fool's Day, Aleks examines if mischief is an essential part of the online world.
How did subliminal advertising begin, and does it work? David Aaronovitch investigates.
Fergal Keane meets the anarchists who petrified the genteel society of the 1890s.
Melvyn Bragg and guests discuss the development and future of material culture.
Pallab Ghosh investigates the potential effects of anti-sleep drugs on society.
