The recent acceptance in mainstream politics of the threats created by global warming has complicated the already complex issues which Bill Bradley discusses in his chapter on "Oil and the Environment." He devotes only a few passages to this recent enthusiastic embrace of ethanol production, but his words of caution are appropriate. Similarly, his advocacy for expanding and strengthening the Kyoto Protocol points to the most promising remedy for the problems this trend will create.
Bradley's concern over geopolitical ramifications from dependence on oil as well as dangers created by resource depletion from overuse also play out in this latest ethanol craze, which is of particular interest to me, having just written about the Amazon in the age of globalization. Shifting energy sources from non-renewable petroleum to plant-based ethanol may alleviate our dependence on politically unacceptable oil-producing countries, but, in its present incarnation, it does little to better our prospects for land preservation or controlling global warming.
In the United States, we have seen a rush to shift land use from corn-for-food to corn-for-fuel. As a geopolitical issue, this has raised numerous concerns. The alarming increase in corn prices has taxed Mexico's poor, and they have responded with mass protests against the ethanol-inflation factor. In the United States, farmers have begun to lobby against the incentives to take land away from food production, as it increases their feed costs. The American consumer will bear the brunt of those increases.
These sacrifices might be tolerable if there were trade-offs in reductions of greenhouse gases and dependence on foreign oil, but these benefits appear elusive. A recent Washington Post article pointed out that the fossil fuel energy needed for conversion of corn into ethanol, a very inefficient production, is so great that the net effect of savings in release of greenhouse gases is only about "15 percent." Sugar cane-based ethanol from Brazil, which can be converted by burning the cane's residue "releases 80 percent less greenhouse cases than gasoline," a significantly more positive use of alternative fuel sources. But the American Midwest is corn-growing, not adaptable to growing sugar cane. And in an act of protectionism for their constituencies, rather than yielding to the realities of a market-based globalized economy, Congress has seen fit to impose a 54 cent per gallon tariff on Brazilian ethanol.
Bradley points out that even a shift to any ethanol production will have attendant costs. As more land is taken from the food cycle for the fuel cycle, more land will need to be put into production; after all, people are not going to stop eating just because alcohol is powering their cars. This is where my interest intersects with Bradley's views of America's needs for energy independence and preservation of the environment. This new land in production has been cleared, at an alarming rate, in the Amazon. The conversion from rain forest to crop land robs us of the rich biodiversity that has evolved in the Amazon, undisturbed from the beginning of time. And the conversion entails a cycle of destruction-through fire and destroyed plant life-that increases greenhouse gas emissions, requiring scores of years to offset it through use of ethanol instead of petroleum. In short, the biggest threat to the environment comes from our efforts to clean up the environment of fossil fuel pollution.
Connecting the United States to the Amazon reminds us, as Bradley points out throughout his book, that the world has become globalized in multiple ways, and the environment is one of them. To butcher an old political adage, "When the American farmer sneezes, the Amazon catches cold." So, the solutions need to be globally based, and the Kyoto Protocol comes as close to staving off this dangerous cycle as any current idea. Bradley's proposal for strengthening Kyoto with "cap and trade" programs makes sense. It also needs to be expanded by including tropical rain forests in its ambit. When this idea first was presented, the Europeans fought it, claiming that allowing the United States to purchase credits through tropical forest preservation wasn't nearly as punitive to its industry as forcing it to purchase expensive pollution controls. The Brazilians themselves fought it, fearful that restrictions on its use of the Amazon would restrict development. Hopefully, the world has become more enlightened as it considers the renewal of Kyoto.
The environmental issue highlights the complexity and scope of today's problems and their interconnectedness across national boundaries. The next generation of leadership will have to understand the solutions often beget problems, and the physical and temporal horizons for these solutions have expanded as the world has shrunk.
Mark London is the co-author of The Last Forest published by Random House.


Comments: 17
All the reliable sources, I read, say the real figures indicate as much as a 30% negative result in elimination of greenhouse gases. Meaning it takes 30% more fossil fuel to produce a fuel (ethanol) with the equivalent energy output.
-Consumers are hurt by higher food prices.
-The environment is hurt by more corn farming (farming isn't exactly environmentally friendly, between the destruction of natural grasslands, fertilizer, and pesticides) and more than likely higher emissions (the most generous estimate is that ethanol produces 30% more energy than it takes to produce, with some studies showing negative net energy production).
-Taxpayers are hurt because ethanol subsidies cost billions of dollars. Not only are these spent on a really ineffective fuel source, they take away from alternative energy sources that are actually good for the environment.
-Oil barons are hardly effected at worst. Even if the entire corn crop was turned into ethanol, it would only be a fraction of oil consumption. Plus, a significant amount of oil is used in the production of ethanol (not to mention coal and natural gas). I'm sure they make jokes in Saudi Arabia about ethanol.
The worst part about ethanol is that it gives people a false sense that we are doing something to stop global warming and oil imports. In reality we are just throwing our money away for one of the worst conceived fuel sources one can imagine.
When was the last time anyone in this forum bit into a cob of yellow field corn?
Clue: Don't call it "food" until you tried it and uh, don't do it you will break your teeth.
Another clue: The by-product of ethanol production is FOOD, yes, it is DG Distillers Grain and DDG Distillers Dry Grain both used as high-quality livestock feed.
The riots were over the shortage of "white corn" not the yellow corn that we export to them. The problem is that our decreasing exports of yellow corn to Mexico have caused livestock breeders there to feed their cattle "white corn". Their market needs time to adjust.
I have to question the wisdom of subsidized U.S. corn putting Mexican farmers out of business. I would think that our decreasing exports to Mexico would be a good thing over time.
You seem to misunderstand why we produce 8 billion gallons of ethanol on an annual basis. We do so to clean the air of our cities. Ethanol is mostly used in a 10% blend as an octane booster and an oxygenater for gasoline -- not as a petroleum substitute.
Corn-based ethanol is not the answer, but it is a critical step toward the answer. Our current ethanol program has built the infra-structure (plants, pipelines, component certification programs, flex-fuel fleets) that lay the ground-work for a cellulous ethanol future.
A future that is already ramping up.
Where to begin...
"higher emissions"-- hello? The primary use for ethanol is in a 10% blend USED TO DECREASE THE HARMFUL EMISSIONS OF GASOLINE
"produces 30% more energy", yup..that means 30% less greenhouse gases. Oh, by the way, the energy to produce ethanol comes mostly from natural gas, a relatively clean source of fuel.
"some studies showing negative net energy production" uh-huh, that would be Mr. Pimetel's study - be careful with that one because he also claims that it takes more energy to produce a gallon of gasoline than we derive from a gallon of gasoline.
Interesting you mentioned that because the success of ethanol will reduce our subsidies this year by $18 Billion. Ethanol also positively affected our balance of trade by another $18 Billion.
Really? Double check your numbers, it takes approx 6 gallons of petroleum to produce 440 gallons of ethanol.
A very emotional statement, but then emotion is what "activism" is really about.
The reality of corn-based ethanol is that it has laid the ground-work for the VERY GREEN cellulous ethanol economy that we will all enjoy within the next decade.
But ethanol from corn strikes me as not a "step along the journey", but rather a dead end. It does not do the promised job and we end up paying for it nonetheless.
As for the net energy thing. Did it ever occur to you to drill down into that claim or do you just accept what you read if the claim is repeated enough?
The "net energy" arguement made against ethanol that most people read about comes from one David Pimentel of Cornell. You really need to read his methodology to realize how stupid it is, and yes I use the word "stupid" without reservation.
You are aware of course that Prof. Pimentel uses the same methodology to conclude that it takes more than energy than a gallon of gasoline to produce a gallon of gasoline --- so using both your and Pimentel's argument - gasoline has a negative energy balance.
Hold on there Jerome. Think a layer deeper.
Right now we pay a substantial subsidy because we have been producing so much of it over the years that we have destroyed our corn market and every other corn market in the world.
In short we have been subsidizing over-production for decades.
Now that we can actually use the corn that we produce, you want to allow artificially low priced ethanol from Brazilian subsidized imports into the country so that you can continue to subsidize the over-production of corn.
That way you lose on both ends.
Since the price of corn has risen to actually match the cost of production, our subsidies will go away.
Here is something else to think about. Farmers produce ethanol cheaper than oil coming out of the ground in the middle-east. Ethanol sells for $1.10 to $1.30 gallon at the refinery, oil comes out of the ground at about $1.50 a gallon. Those numbers are before subsidies and before taxes.
Global warming is moving it into a desert, in maybe a thousand years, however that path will be a long and slow one.
What's the 'normal ' state of the warming on this Earth that we live on.
That would be warm actually with a lot of water around.
What changes that 'normal' warm state?
An asteroid or a super volcano that throws up a bunch of dirt will cause an Ice age of a few million years or so. And we know that for sure.
Then the Earth goes slowly back to it's normal warm state with a lot of water around.
What then about the two external bodies that have an effect on this Earth of ours, the Sun and the Moon.
Well the Sun has an eleven year cycle of from few to many sun spots and every 400 or so years a long period of no sun spots, the last on we called the little Ice Age.
The Sun we know on average is getting warmer a measurable amount every day.
The Moon which is the Gryo of this Earth as it rotates around the Earth and keeps the Earth rotation somewhat stable, we also know is getting farther away every day, also by a measurable distance. And as the moon is a fundamental cause to what we like to call the weather here on Earth, but by getting further away every has a less and less effect on the weather.
Both the Sun getting hotter every day and the Moon getting further away and that 'normal' warm with a lot of water around state of the Earth, doesn't make me think much as to what is going on.
Global Warming, it is called. Do we really need another Ice Age?