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.
BP has just published its latest projection of energy trends – its Energy Outlook 2030. According to the press release:
World energy growth over the next twenty years is expected to be dominated by emerging economies such as China, India, Russia and Brazil while improvements in energy efficiency measures are set to accelerate.
The following podcast from the Financial Times features a discussion of the report and the factors affecting oil prices and their relationship to economic growth
Webcast
Emerging economies seen driving energy demand Financial Times videos, John Authers and Vincent Boland (19/1/11)
Articles
Energy outlook Financial Times, Lex column (19/1/11)
BP energy outlook: main points The Telegraph (20/1/11)
High energy prices need not mean doom Sydney Morning Herald, Jeremy Warner (21/1/11)
Report
BP Energy Outlook 2030 (January 2011)
Data
Power slide The Economist: Daily Chart (19/1/11)
Questions
- What are the most powerful driving forces behind the demand for energy?
- Why does the report forecast virtually no increase in energy demand in developed countries? What assumptions are made about growth rates in OECD and non-OECD countries?
- What factors would lead to a substitution of sustainable energy sources for fossil fuels? What would detrmine the size of such substitution?
- What is the role of the price elasticity of demand for and supply of oil and the income elasticity of demand for oil in determining oil consumption in different parts of the world?
- Why may high energy prices not necessarily mean ‘doom’?
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?
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?
Oil prices have been rising in recent weeks. At the beginning of October 2010, the spot price of Brent Crude was $80 per barrel. By December it has passed $90 per barrel. There is some way to go before it gets to the levels of mid-2008, when it peaked at over $140 per barrel (only then to fall rapidly as the world slid into recession, bottoming out at around $34 per barrel at the end of 2008).
Higher oil prices are a worry for governments around the world as they threaten higher inflation and put recovery from recession in jeopardy. You will probably have noticed the higher petrol prices at the pumps. If you spend more on petrol, you will have less to spend on other things.
So why have oil prices risen and are they likely to continue rising? The following articles examine the causes of the recent surge and look ahead to the likely response from OPEC and the path of oil prices next year.
Articles
Saudi Arabia to Check Oil Rally in 2011, Merrill’s Blanch Says Bloomberg, Juan Pablo Spinetto (13/12/10)
OPEC Cheating Most Since 2004 as Options Signal Oil Hitting $100 Next Year Bloomberg, Grant Smith and Margot Habiby (13/12/10)
Oil higher after OPEC output rollover; eyes on China Reuters, Christopher Johnson (13/12/10)
Central heating oil price shoots up by 70pc The Telegraph, Harry Wallop (10/12/10)
Speculators driving up price of oil St. Louis Post-Dispatch, Kevin G. Hall (12/12/10)
UK petrol prices reach record high BBC News (10/12/10)
Data
Brent cude oil prices (daily) U.S. Energy Information Administration (use the bar at the top to switch between daily, weekly, monthly and annual prices)
Commodity Prices Index Mundi
OPEC Basket Price and other data OPEC
Questions
- Explain why oil prices have been rising. Use a diagram to illustrate your answer.
- How can the concepts of price elasticity of demand, income elasticity of demand and price elasticity of supply help to explain the magnitude of oil price movements?
- Examine what is likely to happen to oil prices over the coming months. What are likely to be the most important factors in determining the direction and size of the price movements? Distinguish between demand-side and supply-side effects in your answer.
- What are ‘crude futures’? Explain how actions in the futures market are likely affect spot prices.
- To what extent can OPEC control oil prices?
- If crude oil prices go up by x%, would you expect petrol station prices to go up by approximately x%, or by more than or less than x%? Explain.
- Why have central heating oil prices risen by around 70% of over the past three months? What are the implications of your answer for the type of market structure in which central heating oil companies are operating?
