I love composting. I put in table scraps and by magic, it somehow turns into soil-food for my garden.
I remember the first time I saw I proper compost pile. It was my first summer job doing trail maintenance and there was a *huge* pile of grass and garden trimmings between the urban trail and a particular home. But it wasn't the size of the pile that impressed me. It was the heat. The biomedical breakdown work of the compost pile was radiating heat.
Normally, heat would have to be hot enough to produce steam in order to proper mechanical work. But in the age of electronics when only a little power may be needed, maybe there is a way to turn this heat into electricity.
MIT seems to think so.
Maybe the heat from my composter could power a backyard motion detecting camera so I can capture the images of the birds that visit a feeder. Maybe it could power the playing of a wind-chimes mp3 track. Maybe it do something really and truly useful. But that's not the point.
The point is that waste equals food. And food waste can be energy.
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