"... this emerging scarcity poses a constraint on food supplies that in some ways is more final than that of oil or climate."He gave an example of China:
"According to the World Bank, even if China adopts a rigorous water-management system -- with higher price incentives, better system efficiency, recycling of waste water, and massive water transfers (as much as 270 million tons a year) from the wetter southern part of the country to the drier north -- the 3-H region will still face a water deficit of about 600 million tons (11 trillion gallons) or about two-thirds of the total yearly flow of the Huang River. And China is only one of a growing number of countries that will soon be slipping into severe water deficits."How does the "local" argument work when you don't have enough water to grow crops? Local food systems are, by definition, self-contained - they do not use imported seed, fertilizers, water, or fuel. The local movement is, to use Ronald's word, an "insular" movement, one that can only take off where resources are concentrated; one that makes no sense in many regions of the world.