The consumption of resources across the world varies significantly. Typically, high-income countries (HICs) consume more than low-income countries (LICs). The main challenge is not having enough resources but that the resources that do exist are unevenly distributed. As an LIC develops so too does its demand for resources. This growth in demand, along with population growth, leads to a shortage of resources.

Global inequalities in the supply and consumption – food

The average calorie consumption in the UK is 3450 kilocalories. However, in an LIC such as Eritrea, it is 1590 kilocalories. There is a clear relationship between areas of greatest population growth and the areas that have the highest levels of undernourishment.

World map of energy consumption 2006 2008, from FAO Food Consumption Nutrient data

A world map showing population growth

Global inequalities in the supply and consumption – water

Water supply around the world is limited and unequally distributed. In order to compare water consumption between countries, a water footprint can be calculated. This is the total amount of water used per day, for things such as drinking and washing. It also includes the water it takes to produce energy, food, goods and recycling. The world average water footprint is 1,240 litres per person. The USA has a water footprint of 2,483 litres per person, whereas Bangladesh is 896 litres per person.

Total water footprint per capita in the period 1996-2005 – source: Mekonnen, M.M. and Hoekstra, A.Y. (2011)

The map below shows areas that suffer water scarcity. Some countries do not have enough water due to physical factors such as a lack of rainfall. Others experience economic scarcity which means they do not have the money to access water.

World water scarcity map – source WWF

Global inequalities in the supply and consumption – energy

As with water and food, there are considerable differences in energy consumption between countries. The richest billion people consume 50 percent of the world’s energy. Only 4 percent of the world’s energy is consumed by the poorest 1 percent.

Demands for energy resources are increasing in LICs and NEEs as they develop economically. As industry develops, farming becomes mechanised and urbanisation occurs there is a rapid growth in energy consumption.