|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||4 days ago||42.81||$29.72||You save $13.09|
|Amazon US||today||29.88||$29.72||You save $0.16|
Sandra Postel lives in Amherst, Massachusetts, where she directs the Global Water Policy Project. She is a Pew Fellow in Conservation and the Environment and a former vice president for research at the Worldwatch Institute. Her previous book, Last Oasis, now appears in eight languages and was the basis for a PBS television documentary.