Fruit and veg, fresh from the skyscraper

IF YOU are the kind of person who can afford to be conscientious about what you eat, you are probably torn between rival concerns whenever you visit the supermarket. You want to keep food miles to a minimum, but you also want your greens to taste like they are fresh from the farm. Most of us, however, don't live in areas where those two ambitions are readily compatible. Hence the rising prevalence of refrigerated shipping containers, on the one hand, and pricey urban farmers' markets on the other. [Read more] ...