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  1. Next Thursday09:32GMT
    BBC World Service

    What makes an expert?

    We explore how the BBC World Service finds experts and decides who to trust

  2. Sun 23 Aug 202618:32GMT
    BBC World Service

    What makes an expert?

    We explore how the BBC World Service finds experts and decides who to trust(R)

  3. Thu 17 Sep 202609:32GMT
    BBC World Service

    17/09/2026 GMT

    Talk back to the BBC and challenge the programme makers.