Ethanol is taking us down the wrong road
Published: October 21, 2011
"Child starves because mother drives to gas station" sounds like a headline from a grocery-store tabloid. But strangely, it could be true. Today we are using about 40 percent of
What's worse, one day's food for an average human being contains about the same amount of energy required to get to the gas station and back home again. So, even if we could perfectly convert the energy from corn to motor fuel, you couldn't even drive a couple of miles on the corn it would take to feed a person for a whole day. Commuting to and from
It seems absurd to squander so much food for so little transportation. How did we come to make such perverse use of our most precious resource? The answer depends, of course, on whom you ask. Some cite politics and the
Alas, what seemed like a good idea has gone horribly wrong. The global food surplus evaporated, and the balance tipped back to shortage. Food prices worldwide have shot up, and domestic corn prices have nearly tripled in the past five years. This has had profound effects up and down the economic ladder, many of which are felt close to home.
For example, this past July, Omtron stopped production at two large
Other effects are more subtle but also more pervasive. American food prices (conveniently eliminated from the "core" inflation rate most often quoted by the media) are climbing. In August, the year-over-year price increases for meat, dairy and eggs were all about 10 percent, according to the USDA — 10 percent in a year when incomes are falling and the economy stagnates!
Three government policies that support food-to-gas conversion were just awful ideas and should be reversed. First of all, we give a direct subsidy to ethanol producers for every gallon they make.
Most important, the federal government imposes a mandate requiring that an increasing portion of our national fuel supply come from corn. Even if the subsidies expire as scheduled at the end of this year, the mandate will remain, effectively forcing every consumer to subsidize the conversion of food to fuel.
Perhaps most dismaying is the fact that biofuels might not even be good for the environment. While the chemical energy in corn comes from sunlight, so much power goes into the fertilizers, harvesters, transports and infrastructure to grow it that many analysts believe corn-based ethanol is an environmental loser overall.
We live in challenging times and everyone would like to make the world better and the economy more sustainable. Unfortunately, our good intentions have paved a road from the corn fields, and we're burning our way down it. Straight to you-know-where.
Pranab Das is a professor of physics at
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