Tree Crops: A Permanent Agriculture by J. Russell Smith

***CAF Note: This is a classic. Worth checking out!***

By J. Russell Smith

I stood on the Great Wall of China near the borders of Mongolia. Below me in the valley, standing up square and high, was a wall that had once surrounded a city. Of the city only a few mud houses remained, scarcely enough to lead one’s mind back to the time when people and household industry teemed within the protecting wall.

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