Slashdot | Cow Manure -- Electricity. 800 cows + feed = a whole lot of manure. A whole lot of manure + bacteria = methane. Methane + large generator = enough power for the farm and 80 nearby homes. Added bonuses include much less smell; and better quality fertiliser.
To think of it another way: if more people did this, the internet could actually be powered by a load of bullshit.
hee hee hee. a pune, or playe on wordes. btw, i know that dairy cows are cows and not bulls. duh. it's a joke, people.