In the final podcast of this series, presented by Bristol Festival of Ideas and sponsored by the Philosopher's Magazine, George Miller looks back at some of the highlights of the 2008 Bristol Festival of Ideas.

Alan Weisman looks to the future to discover what the world might be like, and how it would change if humans disappeared right now for good. In the current age of anxiety over our impact on the earth's climate and environment, he offers an intriguing glimpse of what the real legacy of our time on the planet may be.

New York University psychologist Gary Marcus argues that the mind is not an elegantly designed organ but a 'kluge', a clumsy, cobbled-together contraption. He unveils a fundamentally new way of looking at the human mind, arguing against a whole tradition that praises our human minds as the most perfect result of evolution.

Andrew Kelly, Director of the Bristol Festival of Ideas talks about some of this year's events and looks forward to 2009.