Category: Economics: Ch 13
2008 may yet come to be seen as the year that marks the death of the single-use plastic bag. Many countries around the world, including China, have banned their use and February 2008 has seen Marks and Spencer announcing a 5p charge per plastic bag in an attempt to reduce their usage. Even government departments have faced criticism over their use as promotional tools. For more details on plastic bag bans and policies relating to limiting their usage, see our 2007/8 podcast on The economics of plastic bags elsewhere on the site.
M&S hopes to cut plastic bag use with 5p levy Guardian (28/2/08)
Brown may legislate against free plastic bags Guardian (29/2/08)
Q&A: Plastic bags Guardian (28/2/08)
M&S to charge 5p for carrier bags BBC News Online (28/2/08)
Brown threatens supermarkets over plastic bag reduction Times Online (29/2/08)
Government accused over plastic bag waste Guardian (29/2/08)
Agency scraps use of plastic bags for Whitehall promotions Guardian (1/3/08)
Plastic bag bans around the world BBC News Online (28/2/08)
Videos
M&S to charge for carrier bags BBC News Online (February 2008)
M&S boss on plastic bags BBC News Online (February 2008)
M&S to start charging for plastic bags BBC News Online (February 2008)
Questions
| 1. |
What are the social costs and benefits resulting from the use of single-use plastic
bags? |
| 2. |
Using diagrams as appropriate, show how the equilibrium price and quantity of plastic bags differs from the social optimum. |
| 3. |
Evaluate two possible policies that the government could use to reduce the use of plastic bags. |
In the article below, Ashley Seager from the Guardian argues that the government is doing little to encourage the take-up and adoption of alternative forms of energy generation for households. Indeed he argues hat the situation has got worse and not better in recent months with changes in the system. Only 270 houses were helped with the fitting of photovoltaic systems last year. In Germany the equivalent figure was 130,000.
Reasons to see red over green energy Guardian (18/2/08)
Questions
| 1. |
Assess the external costs and external benefits resulting from installing a photovoltaic electricity generation system on a house. |
| 2. |
Using diagrams as appropriate, show how the installation of photovoltaic cells on houses will alter the socially optimal market equilibrium. |
| 3. |
Evaluate two policies that the government could use to encourage the more widespread adoption of alternative methods of generating power. |
Rapidly rising food prices have led to instability in many countries and have fuelled inflation in less developed economies where food spending is a greater proportion of overall consumer spending. A number of factors have contributed to this rapid rise in prices, but one important contributory factor is the move towards growing crops that can be used as bio-fuels in the developing world and this shift in production is having a knock-on effect in world food markets.
Big food companies accused of risking climate catastrophe Guardian (8/11/07)
An agricultural crime against humanity Monbiot.com (6/11/07)
Global food crisis looms as climate change and fuel shortages bite Guardian (3/11/07)
Questions
| 1. |
Identify the main factors that have led to rising world food prices. |
| 2. |
Assess the extent to which the move towards bio-fuels has contributed to the rise in world food prices. |
| 3. |
Explain how the impact of rising food prices differs in the developed and developing world. |
| 4. |
Discuss policies that governments could adopt to ameliorate the impact of rising food prices on the level of economic growth. |
Al Gore’s contribution to the global climate change debate is not in question and he has, along with the IPCC, been awarded the 2007 Nobel Peace Prize for his work in raising awareness. If you haven’t seen his film “An inconvenient truth” then do get hold of the DVD – it may just be the most interesting PowerPoint presentation you will ever see! However, does he really understand the nature of the debate? The article below suggests that he has not yet taken account of the most fundamental trade-off in dealing with climate change – the trade-off between our own quality of life and that of our descendants in the future.
Save the earth in six hard questions MSN Slate (22/10/07)
Questions
| 1. |
Explain what is mean by a trade-off “between the quality of our own lives and the quality of our descendants’ [lives]”. |
| 2. |
What is meant by the term ‘risk-averse’ and how is this relevant in the climate change debate? |
| 3. |
Consider the questions raised by the article. Discuss how relevant the conclusion reached is in the light of these questions. |
Cement may be quietly emerging as one of the biggest obstacles to lowering carbon emissions to reduce the extent of global warming. The cement industry rarely features in media analysis of the ‘worst polluters’, but in fact the industry is responsible, because of the high energy requirements of manufacture, for more than 5% of carbon dioxide emissions. A building boom globally has fuelled demand for the material. Concrete is the second most used product on the planet, after water, so what can be done to reduce the impact of the industry on the environment?
The unheralded polluter: cement industry comes clean on its impact Guardian (12/10/07)
Questions
| 1. |
With reference to the article, identify the main external costs resulting from the production of cement. |
| 2. |
Discuss the view expressed by Dimitri Paplexopoulos, managing director of Titan Cement that “.. [c]ement is needed to satisfy basic human needs, and there is no obvious substitute, so there is a trade-off between development and sustainability“. |
| 3. |
Discuss policies that governments could adopt to try to move the market for cement towards a more socially optimal level of production. |