20:06Unexpected ElementsCollapsing pensions and civilisationsBBC World Service Duration: 50 minutes Sun 11th Jun 2023, 20:06 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowThe news you know, the science you don't. Show more GenresFactualScience & NatureFormatsDiscussion & TalkBrandUnexpected Elements Source: BBC Online