tricksy-nasty google-fu

It is very hard to find out substantive information about heat produced by a decomposing body* without finding yourself face-to-face with a lot of very, very squicky information (and pics - ew!)

In other words, short story is progressing.

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* ETA: there doesn't seem to be any, though that doesn't seem to be the aspect of decomposition that websites describing said process in detail seem to want to dwell on. (Again: Ew!) Anyhow, I'm just going with "no heat".