13:45How They Made Us Doubt Everything10. Leaving the tribeBBC Radio 4 Duration: 14 minutes Fri 7th Aug 2020, 13:45 on BBC Radio 4 FMAvailable for over a yearListen nowOur story ends at the very top, with a fax to the White House. Show more GenresNewsFactualScience & NatureNature & EnvironmentSeriesHow They Made Us Doubt Everything Source: BBC Online