The urban farm can be as simple as a tomato plant on your balcony or it can be an ambitious, for profit venture like those of The Vertical Farm ( http://www.verticalfarm.com/ ). Why not add biochar to the mix? Urban farms that add biochar will be helping to sequester GHG emissions and will be finding a great way to re-use bio waste. What are the economics of using biochar in an urban farm? What are the distribution issues? Can urban revitalization projects be a part of this conversation?
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