rooftop gardens

As I mentioned yesterday, Sharon Astyk of Casaubon's Book and I are spending this week focusing on urbanization issues. Sharon is a farmer and has been writing for a long time about sustainable food production, particularly as it relates to climate change and a dwindling supply of fossil fuels. In her post yesterday, she linked to some of her past writing about urban issues, and the theme that ties them together is rural-urban collaboration. Cities can't grow enough food to feed all their residents, and rural areas need the durable goods that cities produce, so a reciprocal relationship is…