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Title: Thick fog at Ludgate Circus, London, England, in the late 19th century
Caption: Thick fog at Ludgate Circus, London, England, in the late 19th century. Pea soup, or a pea souper, aka black fog, killer fog or smog was a very thick and often yellowish, greenish, or blackish fog caused by air pollution that contained soot particulates and the poisonous gas sulfur dioxide from all the coal fires which were burning in London in the late 19th century. From Living London, published c.1901
Credit: Album / Universal Images Group / Universal History Archive
Image size: 3703 × 4965 px | 52.6 MB
Print size: 31.4 × 42.0 cm | 1457.9 × 1954.7 in (300 dpi)