Summary: <a href="http://books.wwnorton.com/books/The-Compost-Powered-Water-Heater//">The Compost Powered Water Heater</a> is a book that can change the world: we can be making hot water, for heating and other use -- from compost and cow manure. Gaelan Brown, our guest on the show and author of this unusual book, shows us how this simple concept can be done at scales from the back yard to the municipal waste yard. <br> <br>
