The Great Smog Descended on London More Than 70 Years Ago—And its Cause Took Almost As Long to Discover
Heavy fogs have long been a part of life-time in London . In his novelBleak House , Charles Dickenswrote : “ Fog everywhere . fogginess up the river where it flows among gullible airs and meadow ; murkiness down the river , where it roll defile among the tiers of cargo ships , and the waterside defilement of a great ( and cheating ) city … adventure masses on the bridge deck peeping over the parapets into a nether sky of fog , with fog all round off them , as if they were up in a balloon and hang in the misty clouds ....