Showing posts with label costs. Show all posts
Showing posts with label costs. Show all posts

Sunday, December 30, 2012

Why Do We Keep Burning Our Food When People Are Starving?

There is no question that we need to get off of oil. It is a dirty fuel, responsible for a great deal of our air pollution and global warming. It’s expensive and getting worse all of the time which puts added strain on our already fragile economic system. And, oil is a limited resource, once it’s gone, it’s gone. It has even been speculated that oil has been the basis for a few of our wars. Other countries have called us war mongers, claiming that Americans are eager to go to war with any country that produces a significant amount of oil.
Ethanol has made its way into the global markets and has been adopted my automobile makers. Being ethanol has the advantage of having a partial acceptance by consumers and the auto industry it does make sense to continue to develop that technology.
The biggest issue with ethanol in America is the source used to make it. As far as the amount of gallons per acre that can be produced by a plant, corn is very inefficient. This directly causes farm land prices to go up. Other plants like hemp, switch grass, and sugar cane are far more efficient than corn. In addition, corn requires a lot more fertilizers to grow which can pollute out lakes, streams, and ground waters. Plus, using corn, which is a primary food source for people, raises food costs and lowers humanitarian aid. Mother Jones has an interesting flow chart that shows the effect of using corn as a fuel source.
 
Why do we, as a country, use corn for ethanol production when there are so many better sources out there? Sugar ethanol burns over twice as clean as corn ethanol, and cellulosic ethanol from sources like switch grass, hemp, and forestry waste, burns over 4 ½ times cleaner. Right now, we could import ethanol made from sugar cane directly from Brazil for much cheaper than we could produce ethanol from corn. Our government, however, chooses to tax those ethanol imports so much that they no longer make good economic sense. Some scholarly discussions have implied that this taxation is being done to keep the prices of corn in America artificially high.
I came across another blog article by Ali Sakhtur, entitled Brazilian ethanol is the best hope for replacing oil, says BP’s Bob Dudley. In this article Sakhtur says that “

Ethanol derived from Brazilian sugar-cane offers the best hope of replacing oil as the world’s main source of fuel when it runs out, according to Bob Dudley, BP’s chief executive. […] The alcohol extracted from sugar cane is cheaper, less polluting and more efficient than that from corn, for example, produced in the US. […] Brazil also has a huge advantage in relation to its competitors. The climate and soil are ideal and the sugarcane crop does not have to compete for areas with food crops, as happens in the case of America. […] BP is channelling its research into renewable fuels accordingly, with 40pc of its $1bn (£625m) annual spend in this area targeted at Brazilian ethanol, Mr Dudley told the weekly Brazilian news magazine Veja.

Below is a chart that the EPA put out. It shows the difference of greenhouse gases that are emitted when creating an equivalent amount of energy, compared to gasoline.


As you can see in the chart, switching to an ethanol made from corn does create 21.8% less greenhouse gases which is great. Ethanol made from sugar reduces the amount of greenhouse gases by more than twice that of corn, at a rate of 56% reduction. However, using ethanol that was made from a cellulosic plant source (such as hemp, switch grass and forestry waste) has the biggest effect and reduces the amount of greenhouse gases emitted by 90.9%.
Switch grass is another excellent cellulosic source for making ethanol, much like hemp is. I’ve scoured the internet and cannot find any good reason why we are not using switch grass for making ethanol. It seems to have been dismissed as a crop all together.
According to Biello, “[switchgrass] ethanol delivers 540 percent of the energy used to produce it, compared with just roughly 25 percent more energy returned by corn-based ethanol according to the most optimistic studies. […] Vogel and his team report this week in Proceedings of the National Academy of Sciences USA that switchgrass will store enough carbon in its relatively permanent root system to offset 94 percent of the greenhouse gases emitted both to cultivate it and from the derived ethanol burned by vehicles. Of course, this estimate also relies on using the leftover parts of the grass itself as fuel for the biorefinery”.
Switchgrass doesn’t need prime farm land to grow either, so it doesn’t compete with food crops for land. Biello states that we could use the “[more] than 35 million acres (14.2 million hectares) of marginal land that farmers are currently paid not to plant under the terms of USDA's Conservation Reserve Program”.
Hemp would be a great option for cellulosic ethanol production because it grows really fast, it burns much cleaner than corn, and it produces a lot more gallons per acre than corn. Unfortunately though, industrial hemp is classified as an illegal drug by the Drug Enforcement Agency, despite its very low THC levels. You couldn’t get high off of industrial hemp if you tried. This forces us to import hemp, in which case it gets taxed at a much higher rate than it would if it was grown right here in the U.S.
I agree that we need to move off of fossil fuels and onto renewable fuel sources. Ethanol is a great start to this and has a lot of potential. I just don't agree with using our food sources for fuels. We could start importing ethanol derived from sugar right now, and then start moving to a cellulosic ethanol source like switch grass or industrial hemp. 

Works Cited:
 Mad Money: The Best Trade on Ethanol. CNBC. 28 Jul 2010. Edit. Tom Brennan, Perf. Jim Cramer. 9 Apr. 2011. < http://www.cnbc.com/id/38448335/The_Best_Trade_on_Ethanol_Growth >
Shakhtur, Ali. “Brazilian ethanol is the best hope for replacing oil, says BP’s Bob Dudley”. 16 Feb 2011. 9 Apr. 2011. < http://alishakhtur.com/2011/02/16/brazilian-ethanol-is-the-best-hope-for-replacing-oil-says-bps-bob-dudley/ >

Biello, David. “Grass Makes Better Ethanol than Corn Does”. 8 Jan 2008. Scientific American. 9 Apr. 2011. < http://www.scientificamerican.com/article.cfm?id=grass-makes-better-ethanol-than-corn >
“Greenhouse Gas Impacts of Expanded Renewable and Alternative Fuels Use”. Apr 2007. Environmental Protection Agency. 9 Apr. 2011. < http://apps1.eere.energy.gov/news/pdfs/greenhouse_gas_impacts.pdf >

Jones, Mother. “The Corn Ethanol Effect”. Diminishing Marginal Utility. 6 Nov. 2007. 9 Apr. 2011. < http://www.diminishingmarginalutility.com/blog/hydrocarbon_issues/ >

 

Saturday, July 14, 2012

Should prison inmates be allowed to take college courses?

Some people might think it is a bad idea, or even a waste of money, to educate prisoners. Really, in order to truly rehabilitate a prisoner and give them a real opportunity to succeed once they are released we should consider it. Or else, they will be more likely to continue down the same path. I, personally, think it would be a better option to educate our prisoners than to pay for them to sit in our prisons.

If you look at the general population of state prisons in the United States, only 12.7% of them have any college education at all, according to The Bureau of Justice Statistics. In the population of free people in America, 48% of those have at least some college education. It is very apparent that the people that are filling our prisons are under-educated. If they had some education, their chances of building a productive life and staying out of the prison systems would be significantly higher.
What’s worse? If you look at the education levels of the prison population that was on death row in 2005, only 9.2% of them had any college what so ever. Of the same population, 65% of them had prior felony convictions. This means that 65% of them have gone through America’s criminal rehabilitation system and it didn’t work for them.  That 65% was released, and later ended up back in prison and on death row.
I understand that people sacrifice a lot of time and money for their education. But in the end, it would be cheaper to educate these people than to keep throwing them back in prison. According to LairdCarlson.com, “On average state invest as much as ($24,000) supporting their students’ public school earned baccalaureates as they spend annually ($25,000) incarcerating their prisoners”. Also, if they are incarcerated multiple times that price of incarceration multiplies exponentially.
To me, it would be a much better option to educate our prisoners than to pay for them to occupy our prisons. Save the state money by educating prisoners. In turn, they might not kill you and end up on death row for doing so.
 

Works Cited:

The Bureau of Justice Statistics. http://bjs.ojp.usdoj.gov               1/19/2011
Taylor, Jon Marc. Pell Grants for Prisoners. http://www.lairdcarlson.com 1/19/2011