The Danger of Water Wars
Fred Pearce is the author of When the Rivers Run Dry: Water the Defining Crisis of the Twenty-First Century, March 22nd is World Water Day, an initiative that grew out of the 1992 United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro.
by Fred Pearce
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, ton-for-ton, 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.
Many parts of the world,
notably the Middle East, are running out of water to feed themselves.
In response, a vast global trade is emerging. Not in water itself, but
in thirsty crops like grains and sugar and cotton. Europe is a major importer of thirsty crops. Meanwhile the US, along with a handful of other countries, like Australia, Argentina, Thailand and Canada, are major exporters.
Economists call this the 'virtual water trade.' Many countries would starve without it. But as
more and more countries run short of water, the trade will be
disrupted. And the threat of wars over water will grow.