Vertical farms will be sited in cities in the future, eliminating the geographical gap between producer and consumer.
I love ideas like this but they're hardly new. Architects and progressive minds amongst the city planners have long advocated the preservation and extension of green spaces into structures and concrete jungles as well as the use of sustainable building materials. Unfortunately such advocates rarely get a chance to build anything because of the extra expense of these features. Recently opened in Plymouth is one of the most disgusting pieces of architecture I have ever seen; the very antithesis of aesthetic urban planning.