DiscoveryThin AirEpisode 1BBC World Service Duration: 27 minutesFirst broadcast: Wed 19th Jan 2011, 10:32 on BBC World Service OnlineLatest broadcast: Sat 22nd Jan 2011, 13:32 on BBC World Service OnlineAvailable for over a yearListen nowWe not only live in the atmosphere, we live because of it. It is a transformer and a protector, though ultimately also a poison.GenresFactualScience & NatureFormatsDocumentariesBrandDiscoverySeriesDiscovery: Thin Air Source: BBC Online