The world is incurring a vast water deficit -- one that is largely invisible, historically recent, and growing fast. Globally, demand for water has tripled over the last half century, and millions of irrigation wells have been drilled, pushing water withdrawals beyond recharge rates. In other words, groundwater is now being mine. Falling water tables are already adversely affecting harvests in some countries, including China, which rivals the US as the world's largest grain producer. Falling water tables are largely hidden, but you can see rivers that are drained dry or reduced to a trickle before they reach the sea. The economics of water use do not favor farmers in this competition, simply because it takes so much water to produce food. Increasingly, the world's cities are meeting their growing needs by taking irrigation water from farmers. Unless you commit to a plan for restoring water security, your water planet's future will be thirstier, hungrier, and more precarious.
Global demand for freshwater has tripled in the last half century and will continue to grow along with population increases and economic development. Shrinking water supplies endanger not only the natural environment, but also food and energy supplies and even statehood and international stability. Draining Our Future: The link
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