For the full story of the London Fog of 1952, see “London Fog” in Robert Emmet Hernan, This Borrowed Earth: Lessons From the 15 Worst Environmental Disasters Around the World; or “64 Years after the London Fog Disaster of 1952 and 60 Years after the UK Clean Air Act of 1956,” in the ieBLOG section of this magazine (1 August 2016).