Category Archives: Web Article Review

Geoff Lawton

Here’s a Youtube play list of 200 videos with Geoff Lawton the Permaculture guy. I’ve embedded just one below.

Permaculture is great – it’s about sustainable agriculture and sustainable living in the dictionary sense of sustainability – entwined ecosystems and human settlements that can work together and persist for the long term. On a more practical level, it’s about farms and gardens that function as self-sustaining ecosystems, feeding people with very low inputs of energy and effort. The only possible criticism of it might be that perhaps its scientific core could be shored up a bit. But it really is a system-based ecological design philosophy that could be incorporated into a lot of mainstream programs, from small-scale farming to large-scale agribusiness to urban parks and trees.

Michael Graves’s linear cities

I had forgotten about this idea for long, linear cities laid out along transportation corridors.

It’s interesting. I’m a little skeptical for a few reasons. First, I can imagine it being a cold, corporate world. Who would own the buildings and transportation systems? From my little row house I can walk in many different directions and engage in many different activities on little parcels of land owned or controlled by many different entities. Would this linear city be more like living in a mall, where everything is ultimately controlled by one owner and sanitized for my protection? Also, a line is by definition a one-dimensional world – in a linear city it seems to me like I would have only two choices of direction and that sounds boring. Although the prospect of being close to a natural or agricultural landscape is intriguing. A final concern would be the capacity of the transportation system. As the city keeps getting longer indefinitely, it seems like you might come up against a finite transportation capacity and bottlenecks could develop in the system.

I’m also reminded about a couple works of science fiction, both of which are dystopian. Neal Stephenson’s Snow Crash is laid out along “linear cities” that are definitely not cold, corporate, sanitary or mall like (or safe). They are more like trashy interstate truck stops. Paul McAuley’s Invisible Country alludes to enormous “ribbon arcologies” where most people live. They don’t have to work because they have slaves, so apparently they spend most of their time tripping on drugs and virtual reality, and don’t really go out much. So the linear city is an interesting idea, but we need to be a little cautious how it unfolds.

10-foot lanes

Here’s an article arguing compellingly for 10-foot lanes on city streets. 12-foot lanes might save time and lives on highways, but on city streets they waste space and kill people.

On city streets, most drivers ignore posted speed limits, and instead drive the speed at which they feel safe. That speed is set by the cues provided by the environment. Are there other cars near me? Is an intersection approaching? Can I see around that corner? Are there trees and buildings near the road? Are there people walking or biking nearby? And: How wide is my lane?

All of these factors matter, and others, too. The simplest one to discuss, and probably the most impactful, is lane width. When lanes are built too wide, many bad things happen. In a sentence: pedestrians are forced to walk further across streets on which cars are moving too fast and bikes don’t fit.

I think we need to move toward safe, multi-modal streets on the Dutch and Danish models worldwide. This will be truly sustainable – safe, healthy, low-energy, low-carbon, and supportive of creative, innovative urban ecosystems where people can come together to solve problems. These are major capital investments with tax dollars, so a cost-effective way to do them is to develop the new standards, adopt them as business as usual, and then upgrade our streets to the new standards as they wear out.

That is a vision, but I see some cheap, easy short-term retrofits that could be done right away without major capital investment. Repainting with narrower lanes (streets need to be painted periodically anyway), and giving the saved space to pedestrians, bicycles, and green infrastructure would be pretty easy. Once streets get repainted, the next incremental step is bollards or other physical protections for pedestrians and cyclists. Some more short-term parking and loading zones would be helpful in a lot of cities – if we had more of those in Philadelphia you wouldn’t have so many people blocking the bike lanes we do have. Another short-term thing that could be done is to turn off stoplights and go back to stop signs on a lot of lower-traffic streets – this should even save a little energy and money. Stop signs are much safer for pedestrians, because all the vehicles have to stop or at least almost stop. You don’t have people gunning the engine on a yellow light to clear the intersection or make a quick turn – that is when pedestrians and cyclists die. Finally, on higher-traffic streets, light signals can be reprogrammed so that pedestrians are not in conflict with cars. Left turns on green just absolutely have to go away. I think right turns on green can be made a lot safer by  small curb extension requiring a sharper turn, but we should think seriously about whether we want any turns on green. Let’s think about the pedestrian scramble model, where all traffic stops and pedestrians can cross diagonally. Cyclists could be allowed to treat this like a stop sign. Then, add turn arrows for all turns and it’s pretty safe for everyone.

extreme climate pessimists

On the opposite end of the spectrum from climate deniers are voices predicting that abrupt and irreversible climate change will cause collapse or even human extinction in the relatively near future:

First, James Lovelock, who is best known for the Gaia Hypothesis:

Lovelock believes global warming is now irreversible, and that nothing can prevent large parts of the planet becoming too hot to inhabit, or sinking underwater, resulting in mass migration, famine and epidemics. Britain is going to become a lifeboat for refugees from mainland Europe, so instead of wasting our time on wind turbines we need to start planning how to survive. To Lovelock, the logic is clear. The sustainability brigade are insane to think we can save ourselves by going back to nature; our only chance of survival will come not from less technology, but more.

Nuclear power, he argues, can solve our energy problem – the bigger challenge will be food. “Maybe they’ll synthesise food. I don’t know. Synthesising food is not some mad visionary idea; you can buy it in Tesco’s, in the form of Quorn. It’s not that good, but people buy it. You can live on it.” But he fears we won’t invent the necessary technologies in time, and expects “about 80%” of the world’s population to be wiped out by 2100.

Second, former University of Arizona ecology professor Guy McPherson. This is part of a long, rambling article that cites a lot of evidence, although most of it is newspaper and magazine articles, lecture notes and videos, rather than published peer reviewed articles:

On a planet 4 C hotter than baseline, all we can prepare for is human extinction (from Oliver Tickell’s 2008 synthesis in the Guardian). Tickell is taking a conservative approach, considering humans have not been present at 3.5 C above baseline (i.e., the beginning of the Industrial Revolution, commonly accepted as 1750). I cannot imagine a scenario involving a rapid rise in global-average temperature and also habitat for humans. Neither can Australian climate scientist Clive Hamilton, based on his 17 June 2014 response to Andrew Revkin’s fantasy-based hopium. According to the World Bank’s 2012 report, “Turn down the heat: why a 4°C warmer world must be avoided” and an informed assessment of “BP Energy Outlook 2030” put together by Barry Saxifrage for the Vancouver Observer, our path leads directly to the 4 C mark. The conservative International Energy Agency throws in the towel on avoiding 4 C in this video from June 2014 (check the 25-minute mark). The 19th Conference of the Parties of the UN Framework Convention on Climate Change (COP 19), held in November 2013 in Warsaw, Poland, was warned by professor of climatology Mark Maslin: “We are already planning for a 4°C world because that is where we are heading. I do not know of any scientists who do not believe that.” Among well-regarded climate scientists who think a 4 C world is unavoidable, based solely on atmospheric carbon dioxide, is Cambridge University’s Professor of Ocean Physics and Head of the Polar Ocean Physics Group in the Department of Applied Mathematics, Dr. Peter Wadhams (check the 51-second mark in this 8 August 2014 video), who says: “…the carbon dioxide that we put into the atmosphere, which now exceeded 400 parts per million, is sufficient, if you don’t add any more, to actually raise global temperatures in the end by about four degrees.” Adding to planetary misery is a paper in the 16 December 2013 issue of the Proceedings of the National Academy of Sciences concluding that 4 C terminates the ability of Earth’s vegetation to sequester atmospheric carbon dioxide.

I’m not sure what it means to plan for 4 C (aka extinction). I’m not impressed that civilized scientists claim to be planning for it, either. But I know we’re human animals, and I know animals require habitat to survive. When there is no ability to grow food or secure water, humans will exit the planetary stage.

genetic sequencing: what’s it good for?

Do you find genetic sequencing interesting, but you’ve been struggling to find a practical application? Look no further:

According to Hutchinson, Sweet Peach will provide women with kits allowing them to swab their vaginas at home, then mail the swab into a lab which will sequence the genomes of their vaginal bacteria. Sweet Peach will then create a personalized probiotic — targeting UTIs and yeast infections — based on each woman’s swab. Women will be able to purchase a monthly regimen or a longer “subscription” based on their needs. More information will be available when the company launches their crowdfunding campaign this coming week.

“It’s nothing about scent,” Hutchinson told The Huffington Post in a phone interview. “A vagina should smell like a vagina, and anyone who doesn’t think that doesn’t deserve to be near one.”

Okay, touche, nothing about scent… but I can think of plenty of applications above the waist that do involve scent. Bad breath and armpit odor are caused mainly by sulfate reducing bacteria, I think, so introduce another harmless organism that can out-compete them, and problem solved – in fact, showering too often might tend to disrupt your perfectly balanced armpit ecosystem. How about some genetically customized pro-biotic mouthwash and deodorant? You could come back from your next camping trip smelling better than when you left! Or on a more serious note, how about healthy teeth and gums without brushing?

not so fast, says Paul Krugman

Not so fast with the backslapping on the U.S. economy, says Paul Krugman:

On Dec. 16, 2008, the Fed set its interest target between 0 and 0.25 percent, where it remains to this day.

The fact that we’ve spent six years at the so-called zero lower bound is amazing and depressing…

It’s true that with the U.S. unemployment rate dropping, most analysts expect the Fed to raise interest rates sometime next year. But inflation is low, wages are weak, and the Fed seems to realize that raising rates too soon would be disastrous. Meanwhile, Europe looks further than ever from economic liftoff, while Japan is still struggling to escape from deflation. Oh, and China, which is starting to remind some of us of Japan in the late 1980s, could join the rock-bottom club sooner than you think.

In other inflation news, the price of Thanksgiving was up slightly this year:

– The American Farm Bureau Federation’s annual price survey found the average cost of this year’s Thanksgiving meal for 10 is $49.41, a 37-cent increase from last year.

– Don’t blame the turkey for the slight uptick. The AFBF says the typical 16-pound turkey will cost $21.65. That’s an 11-cent decrease from last year.

– In fact, cranberries, stuffing and pie shells are down in price. The slight rise in total meal cost can be blamed on higher prices for sweet potatoes, milk and whipping cream.

transportation news

Transportation is today’s topic.

First, a fantastic set of facts and figures on just how much space cars actually take up in cities.

According to the FHWA’s Highway Statistics report, large U.S. cities average 4.7 road-miles per 1,000 residents, or 25 road-feet per capita. Assuming 50-foot average road width, this is 1,240 square feet of road area per capita, or about 1,500 per motor vehicle. In addition, there are typically 2-6 off-street parking spaces per vehicle. These parking spaces, including their driveways, require, on average, about 300 square feet, or 600 to 2,400 square feet total…

As a result, in automobile-dependent communities with road and parking supply sufficient to keep traffic congestion to the level typical in U.S. cities, plus parking spaces at most destinations, a city must devote between 2,000 and 4,000 square feet (200-400 square meters) of land to roads and off-street parking per automobile. This exceeds the amount of land devoted to housing per capita for moderate to high development densities (i.e., more than 10 residents per acre, which means less than about 4,000 square feet per capita), and is far more land than most urban neighborhoods devote to public parks. This illustrates the problems that growing cities face if they try to develop automobile-oriented transport systems where most residents own a private car: they will need to devote more land to roads and parking than to housing.

Second, an interview with a Swede:

If we can create a system where people are safe, why shouldn’t we? Why should we put the whole responsibility on the individual road user, when we know they will talk on their phones, they will do lots of things that we might not be happy about? So let’s try to build a more human-friendly system instead. And we have the knowledge to do that.

But to do that we need to have those who build this to actually accept this philosophy. Even in our country context, it still has been a struggle to get our road engineers to understand that they are responsible, it starts with them. Then the individual road user also has a responsibility. But if something goes wrong it goes back to the designer of the system.

There’s a little bit of engineer-bashing there. We engineers are great at solving the problems that are put in front of us. We aren’t always great at framing the problem in new and better ways – for example, an objective of safe streets for all users and not just maximum flow rate of cars. But if you frame the problem in that new and better way and give it to the engineers, we will solve it for you.

Speaking of engineer bashing:

“If there was honest predicting, some percentage of them would under-predict traffic,” he said. “There would be a bell curve. Instead… what we have is these projections that are always immensely above what the actual traffic is.”

There is ample incentive for these firms to inflate numbers. Firms that predict high levels of traffic attract investment dollars and regulatory approvals, which lead to construction projects, and the same firms often end up directly cashing in.

The article is about some anecdotal cases where future traffic was overestimated, toll road companies went bankrupt, and taxpayers were left paying at least part of the bill. This is unfortunate, but it is a pretty serious charge to accuse an engineer of purposely enriching private parties at the expense of the public. (Full disclosure: I have professional ties to organizations mentioned in this article, although I don’t have direct involvement or knowledge of any projects mentioned.) I think the correct conclusion here is that it is time for some of the tools and assumptions and methods used in transportation engineering and planning in the United States to be seriously reexamined and brought up to date.

 

China is now the world’s biggest economy

From Jeffrey Sachs:

According to the IMF, China’s GDP will be $17.6 trillion in 2014, outstripping US output of $17.4 trillion. Of course, because China’s population is more than four times larger, its per capita GDP, at $12,900, is still less than a quarter of the $54,700 recorded in the US, which highlights America’s much higher living standards.
In other U.S. – China news, the NSA is worried that China has the ability to crash the U.S. electrical grid with a cyber attack:
China and “one or two others” can shut down the U.S. electric grids and other critical infrastructure and is performing electronic reconnaissance on a regular basis, said NSA director Admiral Michael Rogers, testifying Thursday (Nov. 20) at a House Select Intelligence Committee hearing on U.S. efforts to combat cybersecurity.

habitat loss and animal welfare

Brian Czech makes the point that habitat loss causes a lot of animal suffering. I think this is almost certainly true, and sad. He mostly blames urbanization. I want to argue with that, because a compact, well-designed city should have a relatively small ecological footprint per person living in it, compared to people spread out over a more rural landscape. For example, the Amish way of farming actually is a big contributor to the water pollution destroying the Chesapeake Bay. If there are going to be 7 billion of us, or 10 billion, we can’t all live like the Amish or it would be an ecological disaster. Of course, it is true that the relatively low-impact lifestyle in the city is supported by an enormous rural base of agriculture, forestry, fishing, resource extraction, mining, and manufacturing that has a huge and growing ecological footprint. It’s possible to envision a world where we eventually turn the corner and manage to grow in quality without growing our physical footprint. But we are far from that, and natural ecosystems are certainly the big losers whether or not we are actually on the verge of destroying ourselves.