Radical Nature - Sustainable Architecture

A closer look at one of the main themes of the current Barbican Art Gallery exhibition 'Radical Nature, Art and Architecture for a Changing Planet 1969-2009' (open until 18th October 2009). Exhibition curator Francesco Manacorda looks at architecture in relation to nature and how architects have approached the subject in the exhibition. Architect Michael Pawlyn also expands on the subject, talking about a form of architecture called biomimicry, whereby buildings are bui