Category: Economics: Ch 13
In its first report on the impact of bio-fuels, the United Nations (UN) has warned that such fuels may increase poverty in developing countries and have a wider environmental impact than has in the past been suggested. With oil prices at a record high and with climate change pressures, much of the developed world has adopted targets for bio-fuels, but environmentalists have warned that the rush to grow the raw materials for bio-fuels may be more damaging to the environment than the fossil fuels they will replace.
Global rush to energy crops threatens to bring food shortages and increase poverty, says UN Guardian (9/5/07)
UN warns on impacts of biofuels BBC News Online (9/5/07)
UN raises doubts on biofuels Guardian (9/5/07)
Questions |
| 1. |
What are the external costs and external benefits resulting from the use of bio-fuels as opposed to fossil fuels? |
| 2. |
Using diagrams as appropriate, show the impact of increased use of bio-fuels on the social equilibrium in the market for fuel. |
| 3. |
Assess policies that European governments could put in place to ensure that the move towards increased use of bio-fuels has a positive environmental impact. |
You do perhaps need to check the date for this story, but once you have established that it wasn’t written on April 1st, you can start to take it a little more seriously. An alliance of an American oil company and food producer is to turn pig fat into diesel fuel. The fuel will apparently have the same chemical properties as diesel but a lower carbon dioxide content and zero sulphur, so should be beneficial for the environment the companies argue.
Pig fat to be turned into diesel BBC News Online (19/4/07)
Questions
| 1. |
Using diagrams as appropriate, compare and contrast the environmental impact of conventional diesel and the new pig fat bio-diesel. |
| 2. |
Discuss the extent to which the new pig fat diesel will be better for the environment than conventional diesel. |
| 3. |
Evaluate two policies that the government could implement to encourage the use of alternative fuels like the new pig fat bio-diesel. |
March 2007 has seen a lot of activity in government circles relating to the environment and environmental legislation. The EU has agreed a renewable energy target for all members while the UK government has released its own climate change bill. The Carbon Trust has then released a one-year pilot of a carbon labelling scheme, with Walkers Crisps being the first brand to bear the carbon labels. The aim is to increase consumers’ awareness of the carbon footprint of the goods they are buying. The articles linked below look at all these issues.
EU agrees renewable energy target BBC News Online (9/3/07)
EU seeks converts to eco-stoicism BBC News Online (9/3/07)
Navarra embraces green energy BBC News Online (9/3/07)
How Europe can save the world Guardian (11/3/07)
Carbon labelling scheme launched BBC News Online (15/3/07)
Labels reveal goods’ carbon cost BBC News Online (16/3/07)
New law in the climate jungle BBC News Online (13/3/07)
Questions
| 1. |
Explain the difference between private costs and external costs. Identify five external costs that arise from the generation of electricity by conventional means. |
| 2. |
Using diagrams as appropriate, show the impact on the market for energy of increased use of energy generated from renewable sources. |
| 3. |
Evaluate the likely effectiveness of the carbon labelling scheme introduced by the Carbon Trust. |
In a surprise move, the Tories have announced plans to tax air travel as part of their environmental policy. It was no surprise to hear the airlines criticise this, but disquiet about this policy has been expressed in traditional Tory circles and it amounts to a significant departure from the past for the party. Are they just flying a kite, or is this a serious policy initiative?
Tories reveal plans for green tax hike on air travel Guardian (11/3/07)
Tory plan for sky-high flight taxes Scotsman (11/3/07)
Airlines shoot down Tory ‘tax on fun’ Telegraph (12/3/07)
Green tax won’t help the planet or the Tories Telegraph (11/3/07)
Tories plan green tax on flights BBC News Online (11/3/07)
Questions
| 1. |
Why might a free market in air travel not result in an optimal number of flights. |
| 2. |
Discuss the likely effectiveness of the tax on flying for reducing the demand for air travel. (You should consider the likely value of the price elasticity of demand in your answer.) |
| 3. |
With the use of appropriate diagrams, assess the likely impact of the tax on flying on the equilibrium level of price and output in the market for air travel. |
Did you buy red roses for Valentine’s Day? If so – where did they come from? Africa or Europe? You may have taken a conscious environmental decision to buy from European sources as the flowers do not have to travel so far and therefore involve fewer air miles, but according to International Development Secretary, Hilary Benn, this may be mistaken and it may be ‘greener’ to buy red from Africa.
Buy African flowers – UK Minister BBC News Online (13/2/07)
Buy African flowers for Valentine’s Day, minister says Guardian (13/2/07)
Questions
| 1. |
Compare and contrast the social costs and social benefits (including both private and external costs) of buying red roses produced in Europe and those produced in Africa. |
| 2. |
Assess which are the most environmentally beneficial presents to give on Valentine’s Day. Give reasons to justify your answer. |
| 3. |
Evaluate two policy options available to the government to reduce the environmental impact of Valentine’s Day. |