Fred Pearce, in The New Statesmen, warns about water shortages:
Water consumption has tripled in the past 30 years and there's a growing danger that disputes over the most necessary of resources could erupt into violence.
Water is rapidly becoming one of the defining crises of the 21st century. Climate change is making its availability increasingly uncertain. And we are using ever more of the stuff.
In the past three decades the human population has doubled but human use of water has tripled – largely because, tonne-for-tonne, modern ‘high-yielding’ crop varieties often need more water than the old crops.
A typical Westerner consumes, directly and through thirsty products like food, about a hundred times their own weight in water every day. That is why some of the great rivers of the world, such as the Nile, Indus, Yellow River and Colorado, no longer reach the sea in any appreciable volume. All their water is taken…
Meanwhile, in the current issue of The New York Review of Books, Chinese activist Dai Qing looks at the 'thirsty dragon' that is Beijing as it prepares to host the Olympics:
Perhaps if this spectacle had been held three hundred years ago, or even a hundred years ago, the environment of Beijing might have been able to sustain it. After all, the city is surrounded by mountains on three sides, has five major water sources, and once had numerous lakes and marshes with underground springs constantly welling up and disgorging crystal-clear water. It was a rich and fertile place, and was home to five imperial capitals. But today Beijing is entirely different. Its reservoirs are 90 percent dry, and all of its rivers flow at historically low levels. The aquifer under Beijing has been drastically lowered by long-term overuse . . .