This was an ok book filled with good ideas. However, they aren't as practical as it leads you to believe. Yes, there are ways to save money and do better for the environment, however this book is short on specifics (what grey box to assist with power, where does it come from, what is cost). And other items, which would save in the long run seem to forget that there is a cost up front, which most may not have readily available (solar panels come to mind). Some great ideas, but overall not to practical for the average person with the average non-existant savings account in this day and age.