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Sources

Every claim in our films, and where it comes from.

5 videos140 sourcesUpdated 26 Oct 2026

5 videos

  1. The lighthouse keepers who vanished from Flannan Isles

    0 sources

    Sources are still being written up for this one.

    • The day a wave of molasses swept through Boston

      11 sources

      In January 1919 a storage tank in Boston's North End burst and released 8.7 million litres of molasses.

        • Tunguska, 1908: the explosion that flattened 80 million trees and left no crater — and the eighty years of expeditions, theories and arguments that followed

          3 sources

          No YouTube link yet — this one shows a page with no thumbnail and a very long title.

          • Krakatoa, 1883: the eruption the whole world read about

            120 sources

            One hundred and twenty newspaper reports, in the order the news travelled.