Tag Archives: Sustainability assessment

Whose pollution is it?

Now that it is summer, I finally have some time to write about papers published this year that have been quite interesting. I’ll start here first with one published by Lin et al. in PNAS back in February that sought to calculate how much of the air pollution that wafts over to the US from China can be attributed to the stuff we buy from them…. that is, the pollution that is produced through the production of plastic do-dads and other things that we import and consume here. The authors looked at sulfur dioxide (a precursor to acid rain), nitrogen oxides (potent greenhouse gases), carbon monoxide, and black carbon (also implicated in climate change).

In total, they found that “about 21% of export-related Chinese emissions were attributed to China-to-US export”, indicating that one-fifth of their air pollution is driven by our consumption of their goods.

As for the pollution that wafts over to the US, Chinese pollution was sufficient to cause at least one additional day of ozone levels that violated US standards from Los Angeles to the eastern seaboard. In particular, a substantial proportion of sulfate pollution measured in the western US was attributable to Chinese exports.

Quite a few years ago, my colleagues and I wrote about the way that international trade can complicate consumption impacts on the environment…. specifically how the international wood trade can hide the link between wood consumption and deforestation. One of the consequences of our increasingly international economies is our growing blindness to how we impact our environment (which is now global as well). Prior to the Industrial Revolution, production and consumption were mainly local to regional; product availability was closely tied to regional weather, soil, and human labor. Prices could reflect these conditions and overall supply, including how that supply impacted the quantity and quality of resources such as water, air and soil. Now that our economy has globalized, we need to find better ways to allow product data and prices to once again reflect the environmental capacity of the system, so that we can better understand the impacts of our consumption. Lin et al.’s paper nicely illustrates why we should care about pollution in China; our environments are as connected as our economies, and negative environmental impacts elsewhere have a way of “boomeranging” back to us.

Ironic hypocrisy

For all of the teaching and research I do on sustainability…. living it, measuring it, valuing it…. I am occasionally a very poor example of it. In the past couple of weeks I have traveled to Scotland, Argentina, and Washington D.C.; ironically, those last two trips were meetings focused on the sustainability of carbon-neutral biofuels. Although I am very anxious about calculating my carbon footprint over these three trips (since I’d probably have to stop breathing for five years to get back to something close to carbon neutral), I am going to do it here as a form of very public shaming. I am hoping that it will motivate me to insist on more virtual trips…

Using this calculator, my total carbon footprint for the flights for these three trips was:

Houghton –> Scotland (measuring sustainable landscapes workshop) –> Houghton: 1.18 metric tons.

Houghton –> Argentina (Pan-American sustainable biofuels workshop) –> Houghton: 1.81 metric tons.

Houghton –> Washington, D.C. (NSF Sustainable Energy Pathways meeting) –> Houghton: 0.31 metric tons.

Total: 3.30 metric tons.

That’s roughly the same amount of carbon that a person in the Maldives emits PER YEAR. It would take roughly a hectare of forest a year to sequester the carbon from those three trips.


Keeping up with the Jones’

In this week’s Proceedings of the National Academy of Sciences, Easterlin et al. have published a study on changes in “life satisfaction” (a.k.a. happiness) in Chinese villages during their economic transition over the past several decades. One might predict that as the Chinese have increased their incomes, they would become happier.

But as this study and a growing body of research demonstrates, money really can’t buy happiness. Prior to the conversion of a state economy to something resembling a market economy, Chinese life satisfaction was highest. As the country began its economic transition in the mid-1990’s, life satisfaction declined, possibly due to the increased level of uncertainty in many people’s lives. After 2000-2005 life satisfaction began to increase, but only for those in the upper income brackets. Even for those in the highest income brackets, life satisfaction has not yet approached what it was before the transition.

Over the transition, China had moved from one of the most egalitarian societies in terms of wealth distribution to one of the least. Although it is possible that the poor were left even poorer by the transition (or at least their economic stability declined), the results suggest that it is relative wealth that creates a decrease in life satisfaction. When you are surrounded by individuals as poor as you, the poverty doesn’t sting quite as bad. This phenomenon has been found often in past studies, suggesting that we humans can be a ferociously jealous lot.

This study (and others like it) has two implications for sustainability.

1. For a majority of people, “life satisfaction” is at the top of their list of characteristics of a sustainable life, right up there with adequate food and water, shelter and clothing, family and friends. Therefore, if researchers in sustainability science can figure out a way to accurately measure this characteristic, they can then use it to measure the current sustainability of a community, region, or nation, and help inform policies, programs and activities that might help a community move towards sustainability by increasing their general life satisfaction. For a long time, per capita Gross Domestic Product (GDP) was used as a proxy for this characteristic, but now a measure of income or wealth inequality called the Gini index has also been added to better capture this notion of happiness, mainly due to studies like Easterlin et al.’s.

2. Since excess consumption in luxury items (i.e., those things we want but don’t need) is one of the main drivers of resource depletion, studies like this one reinforce the lesson that happiness (and therefore sustainability) is unlikely to reside in things but rather in community and one’s place in it. The applied side of sustainability efforts often focus on replacing luxury consumption with activity and community work (e.g., volunteering, local governance, etc.). Indeed it was not long ago when this idea was prevalent in America; Victory Gardens (and war rations), the Peace Corps, and other activities that emphasized community contributions over consumption received popular support. Many of these new sustainability movements (e.g., Transition Towns, the Slow Movement) are actually repurposed efforts from previous eras to increase the life satisfaction component of our lives.

Walking is so pedestrian

This recent article in Slate on the amount of walking that Americans do relative to those in other countries could not have been more timely for me (and thanks to Grist.com for bringing it to my attention!). I read it while in Newport, Rhode Island at a professional meeting (the US-International Association for Landscape Ecology, of all things) and it really struck a chord.

Always the cheapskate, I found a hotel that was almost one-third of the price of the hotel where the meeting was held, and it was only about a mile away: an easily walkable distance. I like to build these sorts of walks into my day, especially when I’m at a conference that involves a lot of sitting in dark rooms for hours on end. The morning walk ensures that I am awake for the presentations, and the evening walk allows me to reflect back on what I’ve learned.

However, although the walk looked straightforward and perfectly safe on the web, it was considerably less so in reality. At least a third of it involved walking in a grassy/sandy ditch while cars sped past on a two-lane road (and I was not the only walker using this route), and the rest of the way included narrow sidewalks littered with street signs, fire hydrants, and other impediments (I suppose I should include dog poop here as well). Marked and posted pedestrian crossings across two busy county roads were few and far between.

It seemed odd to me that a tourist-based town was so difficult for pedestrians, especially given that the town was settled far before automobiles were invented (some of the old houses in the historic district dated back to the 1700’s). Most likely, the space once devoted to pedestrians and horse-drawn carriages was given over to automobiles, with not much thought given to their inherent incompatibilities. Walkability is often emphasized in conversations regarding sustainable cities, and now I have a very personal understanding of this issue.

The Economics of Happiness

Green Film Series Thursday Night
“The Economics of Happiness” will be shown at 7 p.m., Thursday, Jan. 19, in G002 Hesterberg Hall in the Forestry Building. Part of the Green Film Series, the film will be followed by a discussion led by Assistant Professor Daya Muralidharan (School of Business and Economics). The series is free, but a $3 donation is requested.

The Trick-or-Treating Index

This was a really interesting article on the Grist website last week that I saved for this Very Special Day. The author discusses two recent rankings of cities as related to their “trick-or-treat-ability”: the opportunity for small children to walk from house to house in a neighborhood safely. I thought they sounded quite suspiciously like several “sustainable communities” indices, but they are a festive twist on this sustainability assessment staple.

Zillow developed the rankings using four proxies for trick-or-treat-ability: Home value index (more ritsy homes mean safer neighborhoods and better candy); Walkability (so kids don’t have to be driven door-to-door by parents…. although this has something to do with laziness as well, I suspect); Density (the more doors closer together, the less walking needed to fill up the bag); and Violent and Nonviolent Crime rate (for obvious reasons). San Francisco, Boston, Honolulu, Seattle, and Chicago top this list.

Richard Florida also gives it a shot, including in his index the percentage of kids under 14, median household income, share of adults who walk to work, density, and percentage of “artists, designers, and other cultural creatives” (read: those people not likely to buy a boring costume at a discount retailer…. a group which may have little overlap with people who have kids. But I digress.) His index ranks Bridgeport-Stamford, Los Angeles, New York, Chicago and Washington, D.C. as the best trick-or-treating spots.

Of course, trick-or-treating is probably just as safe and productive (from a kid’s point of view) in the smaller, rural towns of 10,000 – 30,000, where everyone knows each other and older houses form closely-knit neighborhoods around a central downtown core. The house prices may not be high in these areas, and perhaps the neighbors hand out the fun size bars instead of the real deal, but these towns certainly shouldn’t be excluded altogether from this sort of index.

And yes, Houghton MI is a pretty decent place to collect a pillowcase full of candy on Halloween.