Not only that, you average wood fired funeral pyre dosen't actually burn that hot, so you aren't reducing corpses to anything less than bone anyway. There is apparently a way of building a funeral pyre using wood that will break down even bone, but it uses an awful lot of wood.


Have you ever seen the contents of a Bronze Age cremation urn? Just ash and a few lumps of very calcified bone. I suppose they must have used a lot of wood, and probably crunched up the bigger bits of what was left. I must design a wind- powered cremation pyre, that electrolyses water than uses the resulting hydrogen and oxygen to blowtorch the corpse.

It takes energy to liquefy the nitrogen, is it less that burning the corpse?