01:32DiscoveryExchanges At The FrontierEpisode 4 - Gwen AdsheadBBC World Service Duration: 27 minutes Thu 18th Nov 2010, 01:32 on BBC World Service OnlineAvailable for over a yearListen nowA second series of public events on the role of science in society, from the BBC World Service with the Wellcome Collection.GenresFactualScience & NatureFormatsDiscussion & TalkBrandDiscoverySeriesDiscovery: Exchanges At The Frontier Source: BBC Online