Man Discovers FREE Way to Heat Home that is Clean and Renewable

A simple, efficient, free source of environmentally clean home heating. This man used elements in his environment to create energy to Heat his home. When eco friendly sources like solar energy and wind were not an option this guy thought outside the box.
Lowering the electric bill is a concern to millions. Saving the planet is also on everyone's mind. How about doing both with the help of farm animals and completely renewable resources that are widely available?