Re: They aren't a problem; they're a solution!
"One word: Biofuel"
Already happening round these parts. The local crematorium supplies "waste heat" to the swimming pool. This warm swimming session brought to you by.......". Admittedly most of the heat is probably from natural gas, though.
Some fag packet calculations suggest (if I've got my maths right, which is open to question) a human body would embody around 600 MJ of energy. In the UK there's around 1m deaths a year, and factoring this all down that's around 150 GWh if you dessicated them. At say 50% efficiency that's be equivalent to a 15 MW power station, which isn't very much in the context of peak electricity demand of 60 GW.