|Other Retailer||Price Checked Time||Their Price in NZD||Our Price|
|Amazon UK||yesterday||44.01||$29.72||You save $14.29|
|Amazon US||4 days ago||32.89||$29.72||You save $3.17|
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.