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Archive for October, 2009

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Food and population defy simplistic portrayals

Wednesday, October 21st, 2009

It’s easy to link rising human populations with food insecurity.  Too bad that explanation is often oversimplistic.

It’s nice to see this article in the NY Times (Food Experts Worry as World Population and Hunger Grow), which basically gets right many of the underlying features of food insecurity.

Let’s consider several of the points:

Scientists and development experts across the globe are racing to increase food production by 50 percent over the next two decades to feed the world’s growing population, yet many doubt their chances despite a broad consensus that enough land, water and expertise exist.

….The global financial recession added at least 100 million people by depriving them of the means to buy enough food, but the numbers were inching up even before the crisis, the United Nations noted in a report last week.

If there is one main point from the Nobel-prize winning work of Amartya Sen, who studied the Bengali and Ethiopian famines, it’s that poverty is one of the main determinants of food insecurity, not lack of food production.  People are often too poor to buy food, even when it’s produced in overabundance, and poor food distribution systems often compound that effect, as the next quotes illustrate:

“The way we manage the global agriculture and food security system doesn’t work,” said Kostas G. Stamoulis, a senior economist at the organization. “There is this paradox of increasing global food production, even in developing countries, yet there is hunger.”

….But the conundrum is whether the food can be grown in the developing world where the hungry can actually get it, at prices they can afford. Poverty and difficult growing conditions plague the places that need new production most, namely sub-Saharan Africa and South Asia.

The next quote reiterates some of the points I made in an earlier post that chronic humanitarian aid often exacerbates food insecurity by undercutting the development of a profitable agricultural system in poor countries:

Mrs. Clinton often calls agriculture aid a critical issue, saying the administration supports domestic efforts in developing nations and improvements in production by small farmers, particularly women. Philip J. Crowley, a department spokesman, said, “We are trying to shift away from emergency aid toward agricultural development.”

One part of this article that’s worth criticizing is this quote about genetically modified (GM) crops:

Then there is the question of genetically modified crops. No issue provokes such an emotional division among agronomists, who debate whether they constitute the building blocks of a second green revolution or a health menace.

“Who is steering this fear and global paranoia about the G.M. cotton and all these G.M. crops?” said Hans P. Binswanger-Mkhize, a South African agriculture consultant. “Show us where the corpses are — the corpses of earthworms, the corpses of bees, the corpses of antelopes and the corpses of humans. Nobody has yet ever shown us a corpse.”

Forget the health issues and dead bugs (for now)…how about the 100,000 indebted Indian farmers who have committed suicide over the past several years?  Not because of GM crops per se but because of the economic outcomes of technology packages, of which GM crops are a part:

  • More technology like the Green Revolution drives up crop yields and drives down prices because of food surpluses.  Farmers are pushed deep into debt considering that they have to pay for all of the inputs to make Green Revolution crops work—-high-yielding hybrid seeds, water, fertilizer, pesticides.  Punjab, India is an unfortunate example of this.
  • Lower grain prices per acre means that farms have to grow crops on more acres to break even (American Agriculture from 1950-today).  As the US example has shown, land, power, and production concentrate into the hands of the few farmers with access to capital, who drive everyone else out of business.
  • The patenting of GM seeds will likely add even more to the costs of poor farmers, who have to buy new GM seeds each year, driving up debt further and making farmers beholden to agribusiness for future genetic modifications to deal with unanticipated global changes.

Sure, technology will likely play a needed role in boosting world food production.  But technology advocates need to temper their enthusiasm with an understanding of the social side effects that magnificent yield gains bring about in poor, developing nations.  Read the Newman article before jumping on the technology-solves-everything bandwagon.

Posted in food and agriculture | 1 Comment »

SuperFreakonomics ignites a SuperStorm of criticism

Wednesday, October 21st, 2009

A few years ago, authors Steven Leavitt and Stephen Dubner wrote the bestseller, Freakonomics: A Rogue Economist Explores the Hidden Side of Everything.

Their follow up—out yesterday– is called SuperFreakonomics: Global Cooling, Patriotic Prostitutes, and Why Suicide Bombers Should Buy Life Insurance.  As the provocative title suggests, they are wading into climate change.

Early response to chapter 5 on climate change has been hostile.  The book is being widely panned for scientific and economic inaccuracies, repetition of discredited ideas about global cooling, as well as false portrayals of the lead scientists interviewed.

Here’s the low down:

In their defense, Levitt and Dubner argue they are not contesting climate warming, only considering possibilities for how to cool it with geoengineering.

Here’s their response (part 1, part 2).

Update (10/23): Not surprisingly, Climate Change Skeptics Embrace “Freakonomics” Sequel.

Update (10/24): Paul Krugman (part 5)

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Posted in climate change science, policy, sustainability | 1 Comment »

“The University’s Crisis of Purpose”

Wednesday, October 21st, 2009

Harvard University President, Drew Gilpin Faust, argues in the NY Times that higher education, in order to deal with global challenges like climate warming, needs to return to its liberal arts principles rather than producing countless numbers of business majors.

Some excerpts:

The world economic crisis and the election of Barack Obama will change the future of higher education. Even as universities, both public and private, face unanticipated financial constraints, the president has called on them to assist in solving problems from health care delivery to climate change to economic recovery….

As the world indulged in a bubble of false prosperity and excessive materialism, should universities — in their research, teaching and writing — have made greater efforts to expose the patterns of risk and denial? Should universities have presented a firmer counterweight to economic irresponsibility? Have universities become too captive to the immediate and worldly purposes they serve? Has the market model become the fundamental and defining identity of higher education?

As a nation, we need to ask more than this from our universities. Higher learning can offer individuals and societies a depth and breadth of vision absent from the inevitably myopic present. Human beings need meaning, understanding and perspective as well as jobs. The question should not be whether we can afford to believe in such purposes in these times, but whether we can afford not to.

Others have argued similarly in the Times recently (Is it Time to Retrain B-Schools? and End the University as We Know It.)

Are these isolated rumblings, or is there a more fundamental problem, first identified by Wendell Berry and David Orr years ago, that the way we train students and structure higher education contributes to the major environmental and social problems we now face?

What does it mean to train students to be successful in a world that is ecologically unsustainable and socially unjust?

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Posted in environmental literacy, higher education, sustainability | 5 Comments »

Bono: The idea of America

Wednesday, October 21st, 2009

538829461_434f4e9f0dIn Bono’s latest column in the NY Times, he argues that it’s time for the U.S. to take the lead in dealing with what he calls “the three extremes — poverty, ideology and climate” beginning to come together.

Excerpts:

In dangerous, clangorous times, the idea of America rings like a bell (see King, M. L., Jr., and Dylan, Bob). It hits a high note and sustains it without wearing on your nerves. (If only we all could.) This was the melody line of the Marshall Plan and it’s resonating again. Why? Because the world sees that America might just hold the keys to solving the three greatest threats we face on this planet: extreme poverty, extreme ideology and extreme climate change. The world senses that America, with renewed global support, might be better placed to defeat this axis of extremism with a new model of foreign policy…

Americans are like singers — we just a little bit, kind of like to be loved. The British want to be admired; the Russians, feared; the French, envied. (The Irish, we just want to be listened to.) But the idea of America, from the very start, was supposed to be contagious enough to sweep up and enthrall the world.

And it is. The world wants to believe in America again because the world needs to believe in America again. We need your ideas — your idea — at a time when the rest of the world is running out of them.

photo credit: http://www.flickr.com/photos/u2005/ / CC BY-NC-ND 2.0

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Posted in nature and culture, policy, social movements, sustainable development | No Comments »

No Impact Man: Finding the middle ground

Wednesday, October 21st, 2009

Colin Beavan is probably better known these days by his blog alias, “No Impact Man.”  For the last year, he and his family have undertaken an experiment to live as low impact as possible in New York City.

MSNBC is running a story on the family’s reflection on the past year, highlighting the lifestyle changes they will sustain and the behaviors and consumption to which they will return.  It’s one family’s take on striving for middle ground between the status quo and radical lifestyle alteration.

And in case you missed it, Beavan challenged Stephen Colbert to go no impact.

Update (10/22): Elizabeth Kolbert critically analyzes Beavan’s approach in The New Yorker: Green Like Me: Living without a fridge and other experiments in environmentalism.

(more…)

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Posted in behavior, environmentalism, nature and culture, social movements, sustainability | No Comments »

Sustainable food conundrums

Friday, October 16th, 2009

2408337491_e12ed5d66b

This column in the Guardian (Climate action shouldn’t target poor farmers) as well as work by Peter Singer illustrate some of the tradeoffs associated with the trend towards eating more organic and locally sourced food.

Is it better to eat locally or import food from poorer, developing nations?

One of the big problems uncovered recently is the fact that humanitarian food aid may be undercutting the ability for poor farmers to establish profitable, self-sustaining agricultural systems, thereby perpetuating food insecurity.  There is nothing worse than competing with free food if you are a fledgling producer.

If developed nations reduce agricultural imports from developing countries because of the locavore movement, this, too, could undermine long-term agricultural development and increase the risk of food insecurity.

It’s important to note that this argument is a bit simplistic.  International trade is complex, affecting food security in several ways:

  • International trade agreements and structural adjustments recommended by the World Bank often favor industrialization over agricultural development in poor countries.  This can turn these nations into net food importers, subjecting them to the whims of the global food market.
  • Developed nations have been running chronic surpluses of many staple crops since the 1970s.  This depresses global commodity prices and further undercuts the ability of poor farmers to develop sustainable agricultural systems (for more about these points, read chapters 5 and 6 in this FAO report and chapter 9 in this FAO report).

Another issue is organic foods.  As Singer asks, is it better to buy organic food locally or from a developing nation like Mexico?  The food miles associated with international transport increase carbon emissions, but the tradeoff is supporting organic farming economies in developing countries.

photo credit:  http://www.flickr.com/photos/donkeycart/ / CC BY-NC 2.0

Posted in food and agriculture, organic, sustainability, sustainable development | 2 Comments »

The “virtue of being citizens first and scientists second”

Thursday, October 15th, 2009

In the latest issue of Conservation Biology, Nelson and Vucetich1,2 tackle the thorny issue of whether scientists can/should also be environmental advocates. This is one of the better, more philosophical, analyses I have seen.

For scientists worried that advocacy undercuts credibility, this piece may allay your concerns.  I recommend reading the whole article (it’s a rich analysis).

Here’s the conclusion as a short excerpt:

(more…)

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Posted in environmental science, environmentalism, science advocacy | No Comments »

In this week’s issue of Nature: Ice sheets thinning

Thursday, October 15th, 2009

antarctica
Most people are aware that the loss of ice from land masses like Greenland and Antarctica have the potential to raise sea level.  One of the current concerns about polar ice loss is that as sea level rises, ice loss is accelerating.How does this work?  Much of the ice along the margins of these land masses is what we call “grounded” –it physically stuck on the rough land lying under the coastal ocean.  Imagine a block of ice sitting on a dinner plate, which, in turn, is sitting on something rough like a carpet.  If you tilt up one end of the plate just a bit, gravity causes the ice to slide off until it hits the carpet, where it gets stuck.  Most of the ice block remains on the plate but a bit is wedged (grounded) into the carpet.  This is what basically happens to many of the glaciers flowing off the Greenland and Antarctic land masses.

Here’s the bad news:

(more…)

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Posted in climate change science, polar ice, sea level rise | 1 Comment »

Can’t we all just get along?

Wednesday, October 14th, 2009

If you’re an environmentalist, the answer is apparently “no” and for an interesting reason suggested in a recent paper1,2 by Clare Saunders in the British Journal of Sociology (subscription required).

She suggests that the social movements like environmentalism are comprised of many different organizations, each fostering a collective identity that is often incompatible with other organizations in the same movement.  Ordinarily, we think of the overall movement goals as having a binding effect among these subgroups.  Apparently not.  People are forming identities with other individuals cut from the same ideological cloth rather than the identity of the social movement itself.

This may not be surprising given the radically different approaches of groups like Earth First, Sierra Club, the Apollo Alliance, 350.org, and Shellenberger and Nordhaus.  It’s also apparent with all of the lines drawn in the sand regarding

  • cap and trade vs. carbon tax and dividend (make carbon expensive)
  • either of the above approaches vs. subsidizing and making renewable energy cheap (Shellenberger and Nordhaus)
  • strict and immediate reduction (350.org) vs. slower emissions reduction trajectories

The bad news is that this kind of animosity can be paralyzing to the social movement, leading to little being accomplished, especially when polarizing debate turns off the public.

(more…)

Posted in behavior, environmentalism, social movements, social science | 2 Comments »

Do our daily routines put our health at risk?

Wednesday, October 14th, 2009

shampoo
Every day, we are exposed to synthetic chemicals and radiation from consumer products.   If you asked me how risky these products are, my responses might range from “I don’t know” to “I don’t want to know” to “If they’re on the market, let’s hope they’re safe!”  Unfortunately, it’s difficult to know if many of the things we use every day really are safe.

Risk analysis is a four-step process by which scientists determine whether chemicals or other agents are unhealthy:

  • Step 1: Hazard screening–Does a chemical look or act like other chemicals already known to be harmful or safe?
  • Step 2: Exposure characterization–How much are we exposed to and how much accumulates in our bodies?
  • Step 3: Effects characterization–How do different doses of an agent lead to different health effects, or what we commonly refer to as “dose-response curves”? This is usually achieved using short-term lab animal tests or epidemiological data that show things like health effects of people working at industry sites or living in contaminated neighborhoods.
  • Step 4: Risk characterization–Given that we identify a chemical as being potentially dangerous (Step 1), and can measure our exposure (Step 2) and the effects that this specific exposure has on health (Step 3), what is the likelihood or risk that we will experience ill health as a result of the exposure?

As the EPA will tell you, there is often poor understanding of the long term risks of synthetic chemicals and radiation.  Much of this comes from the fact that

  • We have not screened many of the chemicals on the market for potential safety.  Here’s a quote from the EPA’s website in 1996, which was subsequently removed:

For the majority of the approximately 3,000 high production volume industrial chemicals produced in the United States in 1996, we have little or no publicly available hazard screening data. These chemicals, non-polymers produced in quantities of more than one million pounds per year, are found in the workplace and in thousands of consumer products. Even fewer data are available for the remainder of the some 70,000 chemicals on the EPA’s inventory.

  • Rigorous effects characterizations are hard to do.  Lab animal tests (rats, mice, etc.) are useful, but they are not a perfect substitute for understanding human health impacts.  Moreover, the kinds of long-term data we need rarely exist because that’s the nature of short grant funding cycles.  We know very little about the synergistic effects of multiple chemicals interacting in our bodies.  Finally, health problems analyzed in epidemiological studies can often be confounded with other lifestyle issues, such as weight, diet, exercise, and smoking.

Thus, we know we are exposed to these things, and we can even measure them in our bodies and in infants,  but we don’t know very well how this translates to long term health risk.

To some, this uncertainty might be license to ignore the issue.  To others, it necessitates better education about what’s in or emanating from our products so that we can decide for ourselves whether or not to limit exposure.

The Environmental Working Group has compiled several interesting lists of consumer products including specific ingredients that have the potential to be harmful:

So go ahead and check out your favorite vegetable, shampoo, cell phone, or toothpaste, and see what comes up.

photo credit: http://www.flickr.com/photos/w610guy/ / CC BY-NC-ND 2.0

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Posted in environmental science, pollutants, risk analysis, shopping guides, toxics | 4 Comments »

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