Economics studies the choices people make. ‘Rational choice’ involves the weighing up of costs and benefits and trying to maximise the surplus of benefits over costs. This surplus will be maximised when people do more of things where the marginal benefit exceeds the marginal cost and less of things where the marginal cost exceeds the marginal benefit. But, of course, measuring benefits and costs is not always easy. Nevertheless, for much of the time we do make conscious choices where we consider that choosing to do something is ‘worth it’: i.e. that the benefit to us exceeds the cost.
When we make a choice, often this involves expenditure. For example, when we choose to buy an item in a shop, we spend money on the item, and also, perhaps, spend money on transport to get us to the shop. But the full opportunity cost includes not only the money we spend, but also the best alternative activity sacrificed while we are out shopping.
Then there are the benefits. Not all pleasurable activity costs us money. The sight of beautiful contryside or the pleasure of the company of friends may cost us very little, if anything, in money terms. But they may still be very valuable to us.
If we are to make optimal decisions we need to have some estimate of all costs and benefits, not just ones involving the payment or receipt of money. This applies both to individual behaviour and to collective decisions made by governments or other agencies.
Cost–benefit analysis seeks to do this to help decisions about new projects, such as a new road, a new hospital, environmental projects, and so on. But just how do we set about putting a value on the environment – on the pleasure of a walk in bluebell woods, on protecting bird life in wetlands or sustaining ecosystems?
For the first time there has been a major study that attempts to value the environment. According to the introduction to the report:
The UK National Ecosystem Assessment (UK NEA) is the first analysis of the UK’s natural environment in terms of the benefits it provides to society and the nation’s continuing prosperity. Carried out between mid-2009 and mid-2011, the UK NEA has been a wide-ranging, multi-stakeholder, cross-disciplinary process, designed to provide a comprehensive picture of past, present and possible future trends in ecosystem services and their values; it is underpinned by the best available evidence and the most up-to-date conceptual thinking and analytical tools. The UK NEA is innovative in scale, scope and methodology, and has involved more than 500 natural scientists, economists, social scientists and other stakeholders from government, academic and private sector institutions, and non-governmental organisations (NGOs).
The following podcast and webcast look at the report and at some of the issues it raises in terms of quantifying and incorporating environmental costs and benefits into decision taking.
Podcast and Webcast
‘The hidden value’ of our green spaces BBC Today Programme, Tom Feilden (2/6/11)
Report puts monetary value on Britain’s natural assets BBC News, Jeremy Cooke (2/6/11)
Articles
NEA report highlights need for biodiversity Farmers Guardian, Ben Briggs (2/6/11)
Nature is worth £19bn a year to the UK economy – report Energy & Environmental Management Magazine (2/6/11)
In praise of… the unquantifiable Guardian (3/6/11)
Priceless benefits of bluebell woods Guardian letters, Dr Bhaskar Vira and Professor Roy Haines-Young (4/6/11)
Nature ‘is worth billions’ to UK BBC News, Richard Black (2/6/11)
Putting a price on nature BBC News, Tom Feilden (2/6/11)
Value of Britain’s trees and waterways calculated in ‘ground-breaking’ study The Telegraph, Andy Bloxham (2/6/11)
Nature worth billions, says environment audit Financial Times, Clive Cookson (2/6/11)
Nature gives UK free services worth billions Planet Earth, Tom Marshall (3/6/11)
UK scientists put price on nature with National Ecosystem Assessment GreenWise, Ann Elise Taylor (2/6/11)
Report
UK National Ecosystem Assessment: link to report DEFRA
UK National Ecosystem Assessment (June 2011)
The UK National Ecosystem Assessment: Synthesis of the Key Findings
Questions
- How would you set about valuing the benefits of woodlands?
- According to the report, the health benefits of living close to a green space are worth up to £300 per person per year. How much credance sould we attach to such a figure?
- What do you understand by the ‘ecosystem approach’ and the term ‘ecosystem services’?
- Explain Figure 2 on page 3 of Chapter 2 of the report.
- Should decision makers quantify only those benefits of ecosystems experienced by humans? Would all environmentalists agree with this approach?
- What are the advantages and disadvantages of quantifying all costs and benefits in money terms?
- Compare the consequences over the next 50 years of a ‘world markets’ scenarios with that of a ‘nature at work’ scenario.
- What policy implications follow from the report?
Are we heading for ‘perfect storm’ in commodity production and prices? Certainly the prices of many commodities have soared in recent months. These include the prices of foodstuffs such as dairy products, cooking oils and cereals, crude oil, cotton, metals and many other raw materials. The overall world commodity price index has risen by 28% in the past 12 months. The following are some examples of specific commodities:
Price rises in the 12 months to February 2011
• Wheat 62%
• Maize 59%
• Coffee 70%
• Beef 39%
• Sugar 46%
• Palm kernal oil 142%
• Soybean oil 50%
• All food price index 32%
• Crude oil 20%
• Cotton 132%
• Fine wool 55%
• Softwood timber 25%
• Iron ore 78%
• Copper 29%
• Tin 55%
• All metals index 58%
• Rubber 79%.
The problems are both short term and long term, and on both the demand and supply sides; and the effects will be at micro, macro and global levels. Some hard choices lie ahead.
The following webcast, articles and reports explore both the current position and look into the future to ask whether rising commodity prices are likely to continue or even accelerate.
The first link is to a BBC World Debate which considers the following issues: “Is scarcity of natural resources a serious challenge for developing and advanced economies? How great is the risk that scarcity might lead to conflict, both within and between nations? Might a scramble for resources lead to a retreat from globalisation and to greater protectionism?”
Webcast
World Debate: Resources BBC World Debate, Louise Arbour, President and CEO, International Crisis Group; James Cameron, Global Agenda Council on Climate Change; He Yafei, Ambassador and Permanent Representative of China to the UN; Malini Mehra, Founder and CEO, Centre for Social Markets; Kevin Rudd, Minister of Foreign Affairs, Australia (19/1/11)
Articles
Global Food Prices Continue to Rise Reuters, Steve Savage (7/3/11)
The 2011 oil shock The Economist (3/3/11)
Global Food Prices Will Probably Be Sustained at Record This Year, UN Says Bloomberg, Supunnabul Suwannaki (9/3/11)
Food prices to stay high as oil costs, weather weigh livemint.com, Apornrath Phoonphongphiphat (9/3/11)
‘Perfect storm’ threatens agriculture in developing nations Manila Bulletin, Lilybeth G. Ison (9/3/11)
IMF sees no immediate respite from high food prices Commodity Online (7/3/11)
Drought, supply, speculation drive world food prices to record high NZ Catholic (8/3/11)
The Factors Affecting Global Food Prices Seeking Alpha, David Hunkar (7/3/11)
World food prices climb to record as UN sounds alarm on further shortages FnBnews (India), Rudy Ruitenberg (9/3/11)
Food crisis: It’s a moral issue for all of us New Straits Times (Malaysia), Rueben Dudley (8/3/11)
Oil prices: Green light from the black stuff Guardian (5/3/11)
Cotton hits $2 a pound Guardian, Terry Macalister (17/2/11)
Supermarkets are raising prices faster than inflation, says UBS The Telegraph, Philip Aldrick (1/3/11)
What next for commodity prices? BBC News, Jamie Robertson (5/5/11)
Reports
FAO Cereal Supply and Demand BriefFood & Agriculture Organization, United Nations (March 2011)
Rising Prices on the Menu Finance & Development (IMF), Thomas Helbling and Shaun Roache (March 2011)
Data
Commodity prices Index Mundi
Commodities Financial Times, market data
Questions
- Identify the various factors that are causing rises in commodity prices. In each case state whether they are supply-side or demand-side factors.
- How can the price elasticity of demand and supply, the income elasticity of demand and the cross-price elasticity of demand be used to analyse the magnitude of the price rises?
- To what extent are rising food prices the result of (a) short-term (i.e. reversible) factors; (b) long-term trends?
- Why are food prices in the shops rising faster in the UK than in many other countries?
- To what extent is the future of food security and prices and moral issues?
- Why may current oil price rises become an opportunity for the future?
- What might be the respective roles be of government, business and consumers in responding to natural resource constraints?
Globalisation is a word we hear a lot of. The world economy is constantly changing and the financial crisis, from which the world is still recovering, is a prime example of just how interdependent nations are. Tony Blair has extended this idea of interdependence in the context of universities and the so-called knowledge economy. As technology advances and economies become more interdependent, international competitiveness is becoming increasingly important and this is one area where universities are vital.
“If you look at the world’s current and emerging superpowers, nearly all have either well-established or are currently establishing university systems that will help them compete in the global economy.”
Just how important is a country’s higher education system and what has been the impact of globalisation on them?
Tony Blair’s global ‘battle of ideas’ BBC News, Sean Coughlan (7/3/11)
Top schools face globalisation challenge Financial Times, Jonathan Doh and Guy Pfefferman (6/3/11)
Questions
- What do we mean by a ‘knowledge economy?
- What is globalisation and how is the interdependence of nations relevant to this concept?
- Tony Blair says that the world’s superpowers all have well-established or are currently establishing university systems. Why is it this helps them to compete globally?
- What are the benefits of higher education? Do they accrue mainly to the individual receiving the education or to society? On which factors does your answer depend?
- What role does information play in making the global education environment more competitive?
Economics is about choice – and choices occur in all parts of our lives. One area is personal relationships. Are we making the best of our relationships with family, friends and sexual partners? Increasingly economists are examining human behaviour in such contexts and asking what factors determine our decisions and whether such decisions are rational.
A recent book looks at the economics of marriage and goes under the title of ‘Spousonomics‘. Its authors, Paula Szuchman and Jenny Anderson, use economics “to master love, marriage and dirty dishes”. As they say:
Every marriage is its own little economy, a business of two with a finite number of resources that need to be allocated efficiently.
They look at ways in which such resources can be allocated efficiently. They also look at apparently irrational behaviour and seek to explain it in terms of various ‘failures’ (akin to market failures). They also examine how these failures can be rectified to improve relationships.
So is this economics stepping on the toes of relationship counsellors and psychologists? Or is this the legitimate domain of economists seeking to understand how to optimise in the context of scarce resources – including time and patience?
Spousonomics gets to heart of the matter Belfast Telegraph (19/1/11)
Run your marriage with ‘Spousonomics’: A new book says applying economic rules with transform your relationship Mail Online, Lydia Slater (31/1/11)
Spousonomics: How Economics Can Help Figure Out Your Marriage Book Beast (31/1/11)
Spousonomics Lesson #1: Loss Aversion YouTube (15/1/11)
Economist’s Explanation For Why Getting Married Isn’t Rational Huffington Post, Dan Ariely (15/1/11)
How Economics Saved My Marriage Newsweek, Paula Szuchman (30/1/11)
Want your marriage to profit? New York Post, Sara Stewart (29/1/11)
Spousonomics: blog, Paula Szuchman and Jenny Anderson
Questions
- How would you define ‘rational behaviour’ in a personal relationship?
- Why may marriage be a better deal generally for men than for women?
- Give some examples of asymmetry of information in marriage and why this may lead to bad decision making?
- Give some examples of risk averse and risk loving behaviour in personal relationships?
- Why are many actions in marriage apparently irrational? Could such actions be explained if the concept of ‘irrationality’ is redefined?
- Why may a simple demand curve help to explain why sexual relationships tend to wane in many marriages?
- Why does moral hazard occur in marriage? Does a combination or moral hazard and asymmetry of information help to explain divorce?
- Should marriage guidance counsellors study economics?!
The world’s population is set to go on rising – at least to 2050. And as population rises, so will the demand for food. But here we come up against a potentially catastrophic illustration of the law of diminishing returns. Population is set to grow, but the world supply of land is pretty well fixed. And with global warming, some land may become unusable.
According to Sir John Beddington, an expert in population biology and lead author of a government-commissioned report, The Future of Food and Farming, there could be serious consequences of this population rise, including rapid rises in the demand for food, rising food prices, rising land prices, the degradation of land, growing food poverty in many developing countries, growing political unrest and serious environmental damage. As the report’s Executive Summary states:
The global food system will experience an unprecedented confluence of pressures over the next 40 years. On the demand side, global population size will increase from nearly seven billion today to eight billion by 2030, and probably to over nine billion by 2050; many people are likely to be wealthier, creating demand for a more varied, high-quality diet requiring additional resources to produce. On the production side, competition for land, water and energy will intensify, while the effects of climate change will become increasingly apparent. The need to reduce greenhouse gas emissions and adapt to a changing climate will become imperative. Over this period globalisation will continue, exposing the food system to novel economic and political pressures.
Any one of these pressures (‘drivers of change’) would present substantial challenges to food security; together they constitute a major threat that requires a strategic reappraisal of how the world is fed.
The report specifically looks at five key challenges for the future:
A. Balancing future demand and supply sustainably – to ensure that food supplies are affordable.
B. Ensuring that there is adequate stability in food prices – and protecting the most vulnerable from the volatility that does occur.
C. Achieving global access to food and ending hunger – this recognises that producing enough food in the world so that everyone can potentially be fed is not the same thing as ensuring food security for all.
D. Managing the contribution of the food system to the mitigation of climate change.
E. Maintaining biodiversity and ecosystem services while feeding the world.
So what can be done and how realistic are the policy solutions? The following broadcasts and articles examine the arguments
Webcasts and podcasts
Articles
Report
Questions
- Summarise the main findings of the report.
- Does increasing the output of food per agricultural worker contradict the law of diminishing returns? Explain.
- What are the current failings of the system of global food supply?
- Why are problems of food supply likely to intensify?
- What externalities are involved in global food production? What impact do these have?
- In what ways might the externalities be internalised?
- What are the benefits and dangers of new technologies as means of increasing food supply?
- To what extent do the goals of increasing food supply and environmental sustainability conflict with each other?
- Explain the main drivers of change that affect food supply and demand? In what ways do these drivers interact with each other?
- “Although the challenges are enormous there are real grounds for optimism.” Explain the report’s authors’ thinking here.