Another thing to be amazed they had to do a study over. Anyone fool can just burn a kerosene lamp and see the black carbon soot stains form after a while with their naked eyes. What do they think happens when you burn organic, carbon based chemicals?
“Keep Your Lamps Trimmed and Burning” (cuts down on the soot, haha)
Hot Tuna, live, with Papa John Creach on the fiddle. 1972
http://www.youtube.com/watch?v=skvvBj2-wkg