01:32One PlanetOne Planet magazine episode 1BBC World Service Duration: 26 minutes Fri 3rd Apr 2009, 01:32 on BBC World Service OnlineAvailable for over a yearThe programme that explores the biggest issues in the environment. This week, an interview with a top climate advisor to the US government, plus a short history of toilets.GenresFactualScience & NatureFormatsDocumentariesBrandOne Planet Source: BBC Online