Sustainablog

Ok, I didn’t actually clear this challenge with the Nobel Committee, but I think we could convince them.  Nobels were awarded early in the 20th century when German scientists Fritz Haber and Carl Bosch made the sequential advances that made it possible to make synthetic nitrogen fertilizer from the nitrogen gas that makes up ~80% of the atmosphere.  Without their contributions we could not have improved the lives of billions of people, and we could never have fed the increase in world population that has occurred since their work.  Of course that comes with the environmental issues I’ve been discussing in my previous posts.  I’m not forgetting that there are changes that need to be made in the way we farm to make nitrogen use more efficient and to prevent water pollution issues.

The Carbon Footprint of Fertilizer Issue

The other thing that would be good to address is the “carbon footprint” of running Haber-Bosch.  For every pound of ammonia that is synthesized, about 3.7 pounds of carbon dioxide is generated (mainly through the use of natural gas to generate hydrogen). That means to fertilize an acre of corn at 120 pounds of nitrogen, there are carbon dioxide emissions that are the equivalent of ~20 gallons of diesel. That works out to 1.59 billion gallon equivalents for just the US corn crop - some serious carbon emissions (I’ve already posted about why Organic fertilizers are not the solution here).
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I’m probably going to irritate some people with this post.  I apologize in advance because that is not at all my intention.  For those readers that don’t think climate change is a real problem, I respect the fact that there is uncertainty in that science, but if the majority position of climate scientists is true, the stakes in terms of human suffering among the poor are too high not to act.  For those who think Organic farming is the answer, I’m not trying to argue the whole issue here - I just want to talk about the science associated with climate change and farming.  I have spent months reading the scientific literature on this topic.  That science points to some very specific changes in how we need to farm.  If those changes were compatible with Organic I’d be a big promoter.  The short answer is “Organic farming is not the best option from a climate change point of view.”

I know this sounds like heresy in the “Green Blogosphere,” but before you react, please read on.  I agree in advance that the Organic/non-Organic discussion is much broader than climate change.  In fairness, climate change was never something that “Organic” was designed to address either during its origins in the early 20th century or during the development of the USDA Organic rules between 1990 and 2000.  I have no desire to get in the way of Organic growers making a living (including my good friends who grow Organic of the old school category) or get in the way of Organic customers getting what they want.    I simply believe that it is critical that we, the declining subset of people who take climate change seriously, be accurately informed about this issue.  If we believe we “have the answer” for farming when that answer is wrong, that keeps us from continuing to find the real answer.

Focusing on the Major Crops

Because it would be far too complex to discuss this question for all crops,  I’ll only be talking about the “carbon footprint” of the major row crops (see the pie chart above) - the wheat, corn, hay, barley, oats, corn, soybeans, hay, oats, dry beans, lentils… that make up the bulk of our calorie intake, our vegetable protein intake, and our animal feeds for meat and dairy.  Those crops also make up the vast majority of farmed land, so they are what matters for climate change.  Fruit and vegetable crops are extremely important for health and food enjoyment, but not much for climate change.  Organic today is heavily weighted to the fruit and vegetable segment and beyond that, it is extremely small. Actually, all of Organic only represents 2.6MM acres ( ~0.7%  of US cropland), so it has almost no effect on climate either way. This is only a discussion about the widely held opinion that Organic would help in a climate change sense.
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Dominique Browning, the former editor-in-chief of House and Garden, is partnering with Environmental Defense Fund to launch a new column called “Personal Nature: Dominique Browning’s distinctive take on all things environmental“. The column will highlight the human impacts of environmental threats like climate change and ocean pollution. Her first piece explores the language we use in talking about climate change and the need for individual and social action.

“It is only a small leap from caring about what’s going on in a garden to caring about what’s going on in the larger environment,” says Ms. Browning. “Environmental issues are hitting the very place we want to feel safest: home. Home ought to be a sacred place of retreat, rest and peace. It won’t be if we turn our backs on the world. This new column was born in the spirit of paying attention, becoming educated and aware and talking about what we can do now. I’m hoping to give matters of global urgency a human touch.

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I just got back from three days at one of my favorite ag industry meetings: The Produce Marketing Association “Fresh Summit.”  To those in the industry this is just known as the PMA.   This is an event where the vast majority of the fresh produce and flower industry gathers to show off their products, their new ideas and all the technologies that help process, sort, package and preserve the freshness of the produce.    There are more than a thousand booths and a great many of them offer samples like the one pictured above.  You get to see new and exotic fruits and vegetables, some of which eventually make it into the mainstream (I’ll talk about some examples in a later post).  

So, basically I juist got to spend three days talking to people about produce, traceability, food safety and sustainability - all the while eating delicious produce samples.  If it didn’t cost $700 to get in I’m sure this event would be over-run.  I think they should have an additional week for consumers at some lower cost (maybe with a lottery for who gets to come).  

Anyway, I was encouraged to find that “sustainability” was a major theme this year - far more than two years ago which was the last time I got to go to the PMA.  I could blog for days about what I saw, but I’ll hit some highlights. 

There was a very cool alternative to the traditional cardboard “flat.” Most fresh produce is shipped in case boxes or in “flats” which are the units that retailers put out on the display if they don’t actually transfer the produce into bulk displays.  ECOPACK has come up with something they call a Green Box which is made of stackable flats or trays made of recyclable or returnable plastic that are 1/2 the weight of the cardboard.  The marketing and traceability information is on small sleeves attached to the ends of the tray. The link I will give you is directed to the produce industry, but you can see it’s sustainability focus.

I talked with some folks from  CSX who are involved in shipments of produce by rail.  They have done a lot of work to understand the carbon footprint of their transport and have monthly contests for their train engineers to see who can achieve the best fuel efficiency.  They are working on ways to make rail a more competitive option with trucking, even for fresh produce, by providing points of freight consolidation.  Especially for or those of you who live in places with that thing called “winter,” this is great for increasing the sustainability of your fresh produce supply.

On the trucking front, there was a company called Universal Container Inc. that has developed a refrigerated container technology for fresh produce shipping (could be on trucks, trains or ships) that uses liquid nitrogen for cooling rather than the standard diesel compressor technology.  It consumes little energy and has no carbon, particulate, NOX emissions or noise in operation.  Its only emission is nitrogen gas which is already ~80% of the atmosphere.  There is obviously energy involved in producing the liquid nitrogen, but that is really largely a co-product from companies that are after other atmospheric gases.  I’d like to see a full-blown LCA (Life Cycle Analysis) on this because I’d bet money that this will come out on top in terms of GHG in addition to the air and noise pollution advantages.

There were also some really cool sustainability things in the packaging area.  I’ll put that in a later post.

Perhaps the best example of sustainability innovation by a produce company came from the largest Onion company in the US, Gills Onions.  They put in an anaerobic digester to deal with the waste from their operations and are now generating enough energy to power 460 homes.  

I was encouraged, because even though I met some folks at the PMA who didn’t even have sustainability on their radar, I met far more produce industry people who were on-board with the importance of this issue.   I’m not at all saying that the sustainability challenge has been fully addressed by the fresh produce industry, but I was very impressed with the momentum I observed.

Your are welcome to comment on this site.  You can also email me at feedback.sdsavage@gmail.com.

All images from me, Steve Savage (Not a great photographer).

I live in the suburbs in Northern California and walk to work, so I really see the details of other people’s front yards as I walk past them.  Mostly these are just boring little grass plots going to waste on each side of the sidewalk.

Yet this is your land, homeowners! Why not really use it?
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David de Rothschild’s Plastiki is a seaworthy boat made from reclaimed plastic bottles. Michael Reynolds’ Earthships (the subject of the documentary Garbage Warrior) are homes built from reclaimed materials, and designed to provide basic needs for the homeowner: energy, food, water, and waste disposal. Put the two together, and you get the Landlord Independent, a work-in-progress by Providence, Rhode Island-based artists and activists Dan Gladstone and Zachary Weindel.

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"It is increasingly clear that the old American dream is shattered, and we need a new dream to replace it, one better suited for today's realities. We need a new definition of the good life. Read the rest of this entry »

According to Richard Florida in his latest book, Who’s Your City?, the average American moves every seven years. “More than 40 million people relocate each year; 15 million make significant moves of more than 50 or 100 miles,” writes Florida. That’s a lot of carboard boxes, time and energy.

The implications for such a footloose society is further complicated by a staggering statistic: a roughly 50 percent divorce rate nationally, leading to multiple homes for what was once a single family home. Of course, second home ownership was also on the rise before the financial meltdown, increasing by 22 percent between 1995 and 2005, according to the Harvard University’s Joint Center on Housing Studies. Now we have two (or more) homes (to fill with stuff) only to later sell them, on average, every seven years.

Then when we age, we’re left with the quagmire of what to do with all our accumulated stuff. The solution for many, of course, is to jam it into self-storage lockers. Over the past two decades, self-storage has emerged as a $20 billion industry and comprises over 52,000 facilities, according to the Self Storage Association. In California, many people park their vehicles in their driveway or on the street not because of their famously great weather (no city snow removal), but because their garages are packed full of more stuff.

Florida points out that there are several key trends emerging:

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