In order to responsibly use and protect this vast resource it is imperative to understand and appreciate the array of issues involved. This book provides a comprehensive view of all of the aspects regarding the earth's water supply. Janine Selendy has put together an excellent collection of pieces covering these topics exploring them in depth. I gained a great deal of insight into a variety subjects that I was not very familiar with prior to reading this book. It is a honor to be included as an author with such an impressive group of people.