Clocks, Civilization, Power . . . all About Time with David Rooney

David Rooney is the author of About Time: A History of Civilisation in Twelve Clocks. He talks about clocks (in the widest sense of the word - sundials, waterclocks, orbiting satellites and more) and about how time is used to demonstrate and exert power. He is quite simply a delightful speaker who knows his subject inside and out and knows how to get you to share his enthusiasm. Such a pleasure!