As we continue the re-broadcast of our series "Mideast Troubled Waters", Sandy Tolan brings us this journal from Gaza: a place where diminished and contaminated water supplies may spark a public health crisis, and make peace even harder to achieve in the Middle East. Our series concludes next week as we examine the politics of water. To obtain a cassette copy of our series, "Troubled Waters", call toll free 800- 218-9988.