I'm all for eating and buying locally, but for most of the population this alone is not sustainable.
from Michelle Ma, UW Today:
How many of Seattle's residents could live off food grown in their city?
If abundant P-Patches and backyard gardens teeming with kale come to mind, you're like many residents who assume urban agriculture in Seattle could support 50, 80 or even 100 percent of the people who live in the city.
It turns out that the actual number is drastically lower. A new University of Washington study finds that urban crops in Seattle could only feed between 1 and 4 percent of the city’s population, even if all viable backyard and public green spaces were converted to growing produce. The study, published this month in the journal of Urban Forestry & Urban Greening, draws on Seattle's current land use, light availability and national nutritional guidelines to determine the city's carrying capacity for feeding its population.
The results show that it would require a 58-mile expansion around the city to meet 100 percent of Seattle’s food needs....
The entire post can be read here.