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.
A huge majority of the British population are in agreement on one thing: UK drinking is out of control. At a cost to the NHS of over £2 billion per annum, it’s quite obvious that the current ‘binge drinking’ culture is unsustainable for those doing the drinking and for the NHS.
This issue was raised back in January 2010, when the Labour government came under pressure to impose a minimum price on alcohol. (see All-you-can-drink bans) The report published in early January suggested that a minimum price on alcohol of 50p per unit would save more than 3000 lives per year. Dr. Richard Taylor said:
“The evidence we took showed that minimum pricing was the most effective way forward and at the moment you can sometimes buy beer cheaper than water. Our message is that the price would be put up but only by a little for moderate drinkers. Surely that is a sacrifice to pay for the good health of young people.”
The Coalition’s plan is to introduce a minimum price for alcohol, which would increase the price of a can of lager to a minimum of 38p and a litre bottle of vodka would be a minimum of £10.71. By increasing the price of alcohol, it is hoped that demand will be reduced and this will go some way to tackling the problem of binge drinking.
However, many argue that the proposal will be ineffective. Some believe that the minimum price is not high enough and that such a small increase will have no effect. Others argue that it will only affect small supermarkets and will have a significantly adverse effect on pubs, which are already struggling. Furthermore, a concern is that by raising the price of alcohol, the only people who will suffer are the so-called ‘sensible’ drinkers. Those who go out and binge drink will be largely unresponsive to the higher price.
Articles
How can raising the price of alcohol improve health BBC News, Michelle Roberts (18/1/11)
Pub association responds to alcohol minimum price BBC News (18/1/11)
SNP refuses Britain-wide alcohol minimum price Telegraph, Simon Johnson (19/1/11)
Experts say the new minimum prices on alcohol sales are not enough Wales Online, Abby Alford (19/1/11)
UK drinking ‘is out of control’, two thirds of public believe Guardian, Alan Travis (18/1/11)
Alcohol price plans will only save 21 lives per year, says expert Telegraph, Tom Whitehead (19/1/11)
Supermarkets forced to charge ‘minimum price’ for alcohol in bid to curb binge drinking Mirror News, James Lyons (18/1/11)
Report
Alcohol House of Commons Health Committee (10/12/09)
Questions
- Using a diagram, explain how a minimum price control on alcohol will work. What are the likely effects?
- Which factors will determine the effectiveness of the minimum price?
- Why is it that ‘binge drinkers’ may not be responsive to the higher price?
- The Mirror article refers to ‘loss leaders’. What are they and how are they relevant here?
- What other policies could be used to tackle binge drinking?
- Given that taxes on products such as alcohol and cigarettes raise so much tax revenue for the government, would there be an adverse effect by raising the minimum price on alcohol?
- Why is the current drinking culture unsustainable?
- Is alcohol a de-merit good? Why is it an example of market failure?
It is widely acknowledged that the supply of oil and gas will eventually run out. As these resources are depleted, prices will inevitably rise. However, with heating and energy bills at extremely high levels, a new ‘resource’ in Sweden has been used to heat buildings: Body Heat!
Hundreds of thousands of people pass through Stockholm Central Station every day and rather than letting the body heat these people generate go to waste, a Swedish firm, Jernhusen, is now ‘collecting’ their heat, converting it into hot water and then using this as a new heating resource. Klass Johnasson, one of the creators of the system said:
This is old technology being used in a new way. The only difference here is that we’ve shifted energy between two different buildings.
The Swedish firm has found that the system is not only environmentally friendly, but it is also good business practice, as it has reduced the energy costs of the block by some 25%, which, during a recession and with high energy prices, is no small thing!
The costs and benefits of such a system will inevitably vary from country to country, but in Sweden’s case, it is a viable method of heating, given their high energy prices and low winter temperatures. They are not stealing the heat from anyone, but are simply converting the excess heat that is already there. Obviously, the fact that the firm owns the station, and also the land between the station and their building, is helpful in ‘transferring’ the energy, but the firm argues that even if this wasn’t the case, it’s nothing co-operation wouldn’t solve. Is this the future of low-cost and low-carbon heating?
Harvesting energy: body heat to warm buildings BBC News, Xanthe Hinchey (9/1/11)
How Sweden turns human body heat into useful energy BBC News (19/4/10)
Passengers passing by Stockholm Central Station reduce 25% of used heating energy The Green Optimistic, Mihai Sandru (12/1/11)
Body heat: the new energy source ecPulse (11/1/11)
Questions
- Think about how we define abundance. Is body heat an abundant resource?
- Why are energy and oil prices so high? How does scarcity affect their price?
- Could this source of heating be described as a market failure? If so, how could we illustrate this on a diagram?
- Consider the Swedish firm’s profit-maximising price and output. The new heating method is said to reduce their costs – will it affect their average and/or marginal costs? Show the impact on a diagram. What happens to the firm’s profits?
- Is this heating method something other firms could benefit from? How could they decide whether it is cost-effective?
- Is there a role for the government to encourage more firms to use this method? Explain your answer.
Here’s an interesting example of oligopoly – one you probably haven’t considered before. It’s the art market. And it’s not just one market, but a whole pyramid of markets. At the bottom are the ‘yearning masses’ of penny-poor artists, from students to those struggling to make a living from their art, with studios in their attic, garden shed or kitchen table. At the top of the pyramid are those very few artists that can earn fantastic sums of money by selling to collectors or top galleries. Then there are all the layers of markets in between, where artists can earn everything from a modest to a reasonable income.
The pyramid is itself depicted as a work of art, which you can see in the linked article below. It’s worth studying this piece of art carefully as well as reading the article.
A guide to the market oligopoly system Reuters, Felix Salmon (28/12/10)
Questions
- Identify the increasing barriers to entry as you work up the art market pyramid.
- Are there any other market imperfections in the art market that you can identify from the diagram?
- What are the key differences between the ‘primary market, tier 1’, the ‘primary market, tier 2’ and ‘the secondary market’?
- Are artists ‘rational maximisers’? If so, what is it they are trying to maximise? If not, why not?
- How would you set about determining the ‘worth’ of a piece of art? How do possible future value of a piece of art determine its present value?
For most people, buying a new car is a luxury and in times of hardship it is a luxury that many cannot afford. Sales of new cars did grow during 2010 by 1.8% compared to the previous year, although the end of the car scrappage scheme in March 2010 did see a fall in sales. Sales went from being 19.9 per cent up on 2009 in the first half of the year, to being 13.8 per cent down for the remainder of 2010. On top of this, they are predicted to fall by some 5% over the coming 12 months.
Part of the explanation of this trend is the VAT rise. While an extra 2.5% is hardly noticeable on many every day items (as we saw when VAT was reduced to 15%), it will have a much larger effect on more expensive items, such as cars.
It was expected that people thinking of buying a new car would try to beat the VAT rise and so car firms hoped for a surge in sales during December. However, this did not occur and with VAT at 20% during 2011, car prices will rise: a £15,000 car will cost an extra £320. Another contributing factor to the lower than expected sales in December was the snow. Retail sales in December collapsed by 37.5%, where as fleet sales, which are less likely to be affected by the adverse weather rose by 5.1%. Similar patterns were seen in Spain, Italy and France, but in Germany sales were up by 7% on the year from December 2009.
The good news for the UK car industry is that the second half of 2011 is expected to see growth, so there may be some recovery. Furthermore, UK-built cars have seen a rise in sales – up by 17%. Finally, as petrol prices continue to rise, it is hoped that this might encourage people to trade in their less efficient old cars for more fuel-efficient new cars. This will certainly be an industry to watch over the next few months.
Snow hits new car sales Telegraph, Graham Ruddick (8/1/11)
UK new car sales to fall in 2011, says industry BBC News (7/1/11)
Mixed end to the year for European car sales Independent (7/1/11)
Car sales set to stall? Daily Mirror, Clinton Manning (8/1/11)
UK new car sales rose 1.8pc in 2010 despite end of scrappage scheme Telegraph, Amy Wilson (7/1/11)
New car sales increased in 2010 Telegraph, Chris Knapman (7/1/11)
Car registrations fall 18% from year ago Financial Times, Norma Cohen (7/1/11)
Questions
- What type of tax is VAT? Illustrate the effect of such a tax on a diagram and explain why the higher the price of the good, the bigger the impact of the VAT rise. How might this impact inflation?
- Why are car sales expected to fall in the UK over the coming year? Given this expected trend, what might we expect to see in terms of car prices?
- What impact might rising petrol prices have on new car purchases? What figure would you expect to see for cross elasticity of demand?
- How might the expected decline in car sales affect the UK economy over the next 12 months?
- What type of market structure is the car industry? (Think about the characteristics of monopolistic competition and oligopoly.)
- How did the car scrappage scheme help car sales?
- What might explain the different trend seen in the German car industry?
