ABSTRACT

On the surface, Accra in Ghana, Beijing in China, and Vancouver in Canada seem to have little in common. They range in population from roughly 2 million in the metropolitan region of Vancouver to more than 14.5 million in Beijing. The per capita incomes are vastly different: about $700 a year in most of Ghana, about $2,200 in Beijing, and more than $32,000 in Vancouver. But take a closer look, digging a little deeper into the backyard and rooftop gardens, and you’ll realize that these city folk share a preoccupation that has thrived since the first citiesraising food.1