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Tag Archives: externalities

env eco

By Amy Tourgee, guest blogger, Kent Place School alumna and Environmental Studies undergraduate at Princeton University

Every December, the holiday season is sure to bring us a lot of things: traveling to see family and friends, fighting the traffic and crowds at the mall, mailboxes stuffed with holiday cards and, of course, a deluge of movie releases. This year was no exception cinema-wise, and the end of the 2012 year was certainly filled with star-studded movies, but one movie in particular, Promised Land, caught my eye. You may not have been able to tell by the commercial – or you may have been distracted by the stars John Krasinski and Matt Damon – but the movie centers around the debate of hydraulic fracturing, not exactly a typical holiday topic.

Nonetheless, the topic of fracturing (or “fracking”) is a huge issue, one of much importance and controversy. The rise of hydraulic fracturing in recent years promises enormous economic benefits as well as equally enormous environmental drawbacks.

Here’s a short review of the cost benefit analysis of hydraulic fracturing:
Benefits: source of energy, energy independence for the U.S., low natural gas prices, job creation
Costs: air and water pollution, human health hazards, huge water consumption, earthquakes

Even to me, an environmental scientist, the benefits are very appealing despite the environmental issues. It seems to me that the costs and benefits are equally matched – and I just wonder, how you can truly evaluate them?

The Economic Lesson
To some degree, you can reconcile them! The risks of hydraulic fracturing are externalities – while they do not affect the producer of the good monetarily, they do influence the standard of living in society. If externalities were taken into consideration, they would shift the curves on the supply-and-demand graph, setting a new equilibrium. For example, the inclusion of fracturing’s negative externalities would show us that natural gas is being overproduced for the price being paid for it.

There are many obstacles that economists and scientists face in order to accomplish an economic analysis like this, such as putting a monetary value on environmental and health conditions. Hopefully, however, economists and scientists can work together to truly maximize the benefits and minimize the costs of hydraulic fracturing.

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sports stadiums and money

Whenever I go to a Philly’s baseball game, the walk from the car to my seat takes awhile. Located in a “stand alone” sports complex off of Route 95, the stadium is one of several and the parking lots extend for acres.

I’ve discovered that there is a reason for my long walk.

It all relates to how the owners and occupants of sports arenas make money. First, it helps to use the arena a lot. If a football team has just 5 or 6 games a year, the arena could be in trouble unless they schedule other events like concerts. Baseball is a little better because you could have approximately 81 games a season. But still, fans have to spend money there. At a stadium like Fenway Park, because of its location, Red Sox fans can take their dollars outside to a local bar or restaurant.

And that takes me back to the Phillies and my long walks.

If a stadium is sufficiently isolated, you have to spend your food, drink and memorabilia money there. The “cost” in time and energy–the transaction cost–is just too great for fans to take their demand elsewhere. Consequently, as sports economist Roger Nolls says, “…the modern version of a baseball stadium essentially is a baseball field, the stands, a shopping center, and then acres of parking to make certain that no one can ever go anywhere else.”

An econtalk discussion with Roger Nolls started me thinking about how the acres of parking lots surrounding the Phillies’ arena complex affect where fans spend their money. Then, for more about stadium economics, I looked to this paper on sports facilities and their communities. And finally, although it is from 2008, this Forbes article says a lot when it discusses the most lucrative stadiums. (#1 was the Los Angeles Staples Center.) Also, here and here, there is more at econlife on the economic impracticalities of sports stadiums.

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Assume for a moment that you are slim, love broccoli and run 4 miles each day. Should your health insurance premium be lower than the amount paid by someone with an unhealthy lifestyle? Wal-Mart, PepsiCo and Safeway say, “Yes.”

One Wal-Mart employee pays a $40 monthly smoking surcharge. PepsiCo charges $600 annually unless a smoker completes a smoking cessation program.

But here are the dilemmas:

  • A regressive fee, the smoker’s surcharge represents a larger proportion of lower earners’ incomes.
  • Low earners have less access to health clubs.
  • An asthmatic might not be able to participate in a mandatory exercise program.
  • Health checks invade privacy.
  • Nicotine addiction is tough to overcome.
  • Obesity could be genetic.
  • Unaffordable surcharges might lead to less insurance coverage for certain people.

And finally, our health is shaped by countless lifestyle decisions. Is it fair to focus on smoking and weight?

Reuters and the NY Times discuss the health-care issues here and here.

The Economic Lesson

An externality is the impact of a behavior or contract that is experienced by a third uninvolved party. When the impact on third parties is undesirable, we call the result a negative externality.

Smoking and obesity create a negative externality because higher health costs smokers raise everyone’s insurance premiums.

A benevolent impact on an uninvolved third party is called a positive externality. A community experiences the positive externality of flu vaccinations.

An Economic Question: Explain how charging higher health insurance premiums for people with unhealthy lifestyles could create unintended consequences.

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A global phenomenon will open up new areas for oil exploration, enable ships to take shortcuts, and provide easier access to world markets for iron ore and other minerals.

The phenomenon? Global warming.

Because of global warming, the polar ice sheet is shrinking. With this summer having been one of the warmest on record, ships are traveling from Murmansk, near Finland, across the top of the world to Asia in record time. Scientists predict that by 2050, this Northeast Passage will be ice-free during the summer.

A navigable Northeast Passage means shorter travel time from Europe to Asia and competition for the Suez Canal. It means previously inaccessible resources can now be drilled and mined and transported.

That takes us to the Arctic Ocean doughnut hole. A huge fishing area that is beyond any nation’s jurisdiction, as it melts, the doughnut hole will attract fishing vessels from around the world.

Our bottom line? Global warming could have environmental positives that would include huge energy and mineral discoveries, and emissions reduction and cheaper transport from shorter routes.

The Economic Lesson

Perhaps one of the first environmentalists, Reverend Thomas Malthus told us in 1798 that population grows geometrically while resource production expands arithmetically. Consequently, resource prices will rise and supply will become increasingly inadequate.

You can see though, that environmental predictions are tough to make. This NY Times Magazine article describes the bet between the boomsters who said we would not exhaust our resource supply and the doomsters who said we would.

An Economic Question: Whenever a transaction between two parties affects a third, uninvolved individual or group, economists see an externality. How does global warming relate to positive and negative externalities?

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There is oil under Murchison Falls National Park. Home to rare birds, lions, elephants, and giraffes, this Ugandan nature park is a tourist mecca. The Ugandan government, though, prefers oil to tourists as a revenue stream. 

Thinking as economists, we can identify negative and positive externalities of the decision to let Tullow Oil, PLC explore and drill. On the negative side, wildlife in the park is being adversely affected and villagers’ revenue from tourism is diminished. However, because oil will bring in more money than tourism, Uganda’s economic growth should accelerate and generate a ripple of benefits. 

Economics is always about cost and benefit. Environmentalists say the choice is money or wildlife. I wonder, though, whether the “money” side involves a better life for many people if the Ugandan government appropriately manages foreign investment. Still, we have an “on the one hand but then on the other” situation–the reason President Harry Truman (1945-1953) said he was searching for a one-handed economist.

The Economic Lesson

Whenever a transaction between two parties affects a third, uninvolved individual or group, economists see an externality.

Comments? Other externalities?

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