jarofthoughts
Empirical Curmudgeon
Well, kinda. Part of the "grow locally/eat locally" movement is to take into account which crops grow well in each area. This usually means adjusting one's diet accordingly.
Here in southern Ontario, for instance, this would mean only having fresh strawberries for a few weeks a year. If we want strawberries the rest of the time, they'd have to be in the form of preserves like jams.
In Norway, locally grown food wouldn't normally mean growing oranges in greenhouses; it would mean choosing other foods instead of oranges.
Sure, but since people have grown used to eating strawberries and oranges, they are often unwilling to make that change.
I have more confidence in methods that does not force people to give up the things they love, while at the same time providing safe food that is environmentally defensible.
The answer, as with so many things, is more science, for instance through genetically modified crops, cleaner sources of energy and more.