Adam Hart-Davis is a scientist, author, photographer, historian and broadcaster, well-known for presenting the BBC television series "Local Heroes" and "What the Romans Did for Us" (and spinoff series on the Victorians, the Tudors, the Stuarts, and the Ancients). He was also a co-presenter of "Tomorrow's World", and presented "Science Shack". His most recent book is Science: The Definitive Visual History (Dorling Kindersley).