Urban farming, urban agriculture or urban ag as it is sometimes called, is about growing food in cities. It is about local people growing their own, often organic crops on rooftops and in neighborhood gardens, providing easy access to fresh, local food.

The urban farming business is growing fast. Individuals, neighborhood groups, and local coõperations are getting involved in sustainable agriculture in cities, as well as companies and agricultural entrepreneurs.

Elon Musk is a master in attracting attention with provocative oneliners and suggestive tweets. Many of those are aimed at boosting his green image, and that of his companies and products. Like Tesla electric cars. The facts, however, often tell a different story.