That may be, but it’s on the internet so we know it is true.
Yeartye, Manchester, United Kingdom, 4 hours ago
Well, for a CIA document it’s rather badly written (’Earthlings’ is straight out of cheesy science fiction films circa 1955). But if we take it at face value, the human body is 90% water, with carbon, calcium and iron making up most of the rest. Limestone is calcium carbonate, so all the ingredients are there to make limestone, you just have to drive off most of the water and catalyse the remaining components to form a rock-like substance. But what happened to the iron?