Now that argument no longer holds true. With the price of oil at more than $120 a barrel (up from less than $30 for most of the last 50 years), small and midsize nonpolluting farms, the ones growing the healthiest and best-tasting food, are gaining a competitive advantage. They aren’t as reliant on oil, because they use fewer large machines and less pesticide and fertilizer.

In fact, small farms are the most productive on earth. A four-acre farm in the United States nets, on average, $1,400 per acre; a 1,364-acre farm nets $39 an acre. Big farms have long compensated for the disequilibrium with sheer quantity. But their economies of scale come from mass distribution, and with diesel fuel costing more than $4 per gallon in many locations, it’s no longer efficient to transport food 1,500 miles from where it’s grown.