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Pro-Urbanism "...developers and county leaders in Fairfax County are close to finalizing a radical multibillion-dollar plan to "desprawl" Tysons Corner, VA. The proposal, aimed at attracting a total of 100,000 with the texture and energy of city life, involves tearing up large swaths of the existing town and constructing a series of urban villages, with buildings up to 25 stories high."

This highlights the rare but occassional shrinking city. Detroits population and economic state is declining, and the city - structurally - may actually have to get smaller. This is, as the article notes, not exactly what urban planning is traditionally oriented towards. But that does not mean it will never happen. Imagine fuel prices increasing without a good alternative coming in - people will likely begin to abandon hinterlands and outskirts and suburbs for cities, and this problem will occur even without dramatic and rare economic decline. Or just the general appeal of cities. Or Stewart Brand's defused population bomb comes true, and economic decline due to aging populations strikes many more aging cities. So it is worth paying attention to, especially since it offers space, which I like to see as opportunity. You can do a lot with that - Detroit gets a lot of urban agriculture press, and some of the first urban farms did emerge from reclaimed abandoned property where buildings had been burned down for insurance money. And the size of the space emptying out might even make it functionally scalable, which has been a major problem. Empty neighborhoods that are structurally intact are also really interesting to me - that is a lot of initial capital set up that could be utilized in the future, allowing for some groups with very little amassed wealth or capital to potentially do something with it. Who knows what, but there looks to be a lot to play with here, and it could be really cool.

A challenge to the idea that vertical farming may be more energy efficient than traditional approaches. Like the debate around local food though, it bothers me that we focus on energy and/or CO2 emissions when we measure environmental impact. In a much bigger picture, I'm not even so sure that another agricultural revolution, like this, is really what's best for the planet in the long run.

Good points all. While the excitement about vertical farms is good for attracting investors, the economic realities of all the systems involved are definitely questionable. That said, the Economist left out some things that are worth mentioning, both for and against the idea. First of all, the use of hydroponics is thrown out pretty willingly and easily, but its hardly simple. For one, you're moving away from the use of soil (and fertilizer, manure, other related mediums) as the primary medium for agricultural production. We are simulatenously just realizing that we don't really know much about soil as a medium. And even with water we have the same problems. The "known unknowns" are pretty great either way, and scale plays in. Most hydroponics (though there are major exceptions) are run by research organizations or universities, which means there is a lot more free and regular support, particularly from the sciences, than most commercial operations will be able to afford. Its much easier, when things go wrong, to have a cadre of free sciences hovering around. As for "you can grow anything in hydroponics", speaking from work I've done with those systems, you can - but good luck with a lot of it. Plus water filtration becomes an issue, though there are biological ways of handling that (even then you're creating a very limited ecosystem - they can get thrown off ridiculously easily). On the other hand, while light inputs are definitely a notable consideration, light science and "light engineering" is making leaps and bounds. So while I'd say issues with light are writing it off just yet, I wouldn't count on that as the everlasting limiting factor. Along with the various spinning, rotating, window side containers there are also various types of windows, "light tunnels", and even the good ol' basic efficient lighting systems and such to consider. And design, rather than technology, can also contribute - several vertical farm designs "stagger" floors to reduce

shading from the building itself. Also, for anyone following alternative agriculture from the technology/commerce/urban ag side, there are two details the Economist got wrong. Sweetwater Organics, featured on NBC a few weeks ago, is already running a commerical hydroponics farm out of an old railroad warehouse. The nutrients for their water chemistry come from fish (poop), who are also raised in tandem with the plants, also for food. Also, at least one vertical farm plan has moved off the drawing board (sort of) into fundraising stages, and the land for it is cleared (both physically and legally) for building. This is at Will Allen's Growing Power, in Milwaukee, WI. Will, the "father of modern urban agriculture" and a frequent visitor to the White House with Michelle Obama's "Let's Move" program, is hoping to build the five story building within a few years. It will be located (and provide food to) in a food desert, in one of Milwaukee's largest low-income housing projects. So the world will soon have a test case for this idea. Other cities may follow, but as far as I know the closest one (in terms of multiple floors of greenhouses) is planned for Toronto, and is at least two decades out - which probably means its anyone's guess whether it'll happen.

The article talks about the new technologies used in planning of a Sherbourne Common in Toronto. The main improvement of this park is its water treatment infrastructure. It also raises topics of urban planning and how nature is integrated into cirties ("New nature is what we culticate in our cities"). 

A fascinating review, certainly to understand the technological advances of this "sustainable city" but also to understand its shadows: "[the designer's] fantasy world is only possible as a meticulously planned community, built from the ground up and of modest size. What Masdar really represents, in fact, is the crystallization of another global phenomenon: the growing division of the world into refined, high-end enclaves and vast formless ghettos where issues like sustainability have little immediate relevance."  Is this what we are after?

deBuys, William. 2011. A Great Aridness: Climate Change and the Future of the American Southwest. New York: Oxford University Press deBuys goes into the political, ecological, ecological and climactic science behind what drives the current and future problems in the American Southwest. He summarizes the science behind climate change, Hadley cells and the problems behind urban planning in big cities like Phoenix. Aside from giving a stirring overview of the natural beauty the region boasts, deBuys says more than once that the book is a thorough history of a region that will drastically be affected by climate change within our grasp that we should not ignore. The problems, while numerous and quite difficult to sort through, should be easier to solve with our resources in the region. I agree with the need for cooperation to swash through the web of problems, but despite the issues of drought and water quality mutual to regions around the world, they are simply not the same. I fear it would be much harder to transpose a solution from the Southwest to the Mediterranean or Western China.

"National environmental organizations have traditionally drawn their membership from the white and affluent, and have faced criticism for focusing more on protecting resources than protecting people. But with a black president committed to environmental issues in the White House and a need to achieve broader public support for initiatives like federal legislation to address global warming, many environmentalists say they feel pressure to diversify the movement further, both in membership and at higher levels of leadership."

Lisa Jackson has been going around the nations meeting with local environmental organizations for a range of reasons lately, and she has definitely been pushing - perhaps subtly - this agenda. When she came to Milwaukee, where I live, she had her meeting in an urban nature center in the very heart of the inner city, a generally impoverished, overwhelmingly African-American area of town. Not the usual place for high-level government officials to have meetings, so I feel like she means what she says in this article. Anecdotal evidence, but I was still impressed. Makes me nervous given than the new plan for Lisa Jackson is summed up this way: "I think she'll be very much in demand on the Hill, at times not of her choosing," said a former staffer on the House Energy and Commerce Committee. "It will diminish her free time, shall we say." I hope the environmental movement really addresses this seriously, if its going to expand to the scale many seem to think it needs to for serious, rapid change. Really interesting article, thanks!