When it comes to urban farming, Japanese city dwellers are leagues ahead of their American counterparts, writes Azby Brown. Japan's metropolises may be crowded, but carefully laid-out plots and vertical-farming techniques allow residents to harvest crops year-round. "Techniques similar to some of these are already familiar outside of Japan, but it is eye-opening to see how they've been adapted to the hyper-constrained spatial conditions the country has long experienced," Brown writes.

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