Causality takes one disaster at a time and rebuilds it from the ground up. The subjects of its episodes cross industries and continents. There is Wittenoom, a mining town in the Pilbara region of Western Australia, and the long history of asbestos behind it. There is the West Gate Bridge, where a span came down onto worksheds beneath a pillar while some workers were eating lunch in the impact zone. There are two cases involving chemicals, Bayer CropScience and the West Fertilizer Company, and two marine ones, the Carnival Triumph and the OceanGate Titan. The narrator throughout is John Chigi, and his method is steady. Episodes tend to begin with background, such as a company's founding or a town's origins, rather than with the moment of catastrophe. The failure comes later, laid out in clock times and instrument readings. In the Bayer CropScience episode, the pressure and temperature of a residue treater are read out against the clock as the pressure climbs, a high-pressure alarm sounds and the vessel's operating limit is passed. In the West Fertilizer Company episode, the explanation turns to how melted PVC pipework and organic asphalt shingles would have fallen into the FGAN pile during the fire and contaminated it. Numbers are a constant. Dust limits, distances and temperatures come in both metric and imperial, sometimes with nautical miles as well. The Wittenoom episode lays out the medical and regulatory record on asbestos across decades, from early diagnoses and exposure standards to the epidemiology that classed it as a carcinogen. Setting a local disaster against that wider record of what was known, and when, gives the episode much of its weight. People get as much attention as physics. The OceanGate Titan episode quotes David Lockridge, the company's director of marine operations, word for word, then follows him from his dismissal to his evidence to the NTSB and a whistleblower report to OSHA. The West Gate Bridge episode records the dead and injured, including three engineers who were on top of the span when it fell. The Carnival Triumph episode describes a ship without power: bedding dragged onto open decks, arguments over space, sanitation reduced to plastic bags. Chigi also makes room for candour, noting at the close of that story that he has cruised with Carnival himself and is planning another family trip with them. The Wittenoom topic came as a suggestion through the show's Facebook page, and he credits the person who sent it by name. Sources for each episode are linked in the show notes. The show carries no ads and is supported by listeners, with premium supporters receiving early releases and bonus material.