No water, no life - no blue, no green

摘要

How can the world make better use of water, our most important natural resource? Many of the world's worst geopolitical problems have a common root in this most basic element of life. 1. On five continents, desperate farmers and shepherds have been driven from their arid lands by drought and desertification and migrate to more industrialized countries that can't handle the surge economically or politically, empowering hate-fueled nationalism.