An interesting tidbit from the National Geographic web site -

Derek Lovley and Daniel Bond, of the University of Massachusetts, have made a battery from microbe-rich sediment from the ocean floor, producing a new environmentally friendly and potentially inexhaustible source of power—mud. (read about it here (http://news.nationalgeographic.com/news/2002/01/0122_020122_tvmudbatteries.html))

Peace.

And what kind of shelf life does it have? Do you add water when you are ready to use it? Kind of reminds me of when we were babies. You know playing in the mud...