How are rising CO2 emissions linked to a rising world population?

Many discussions on sustainability rarely mention the world's growing population and whether current or projected future levels are – or can be made – compatible with living within the limits set by the Earth's regenerative capacity. David Knight's paper shows that the growing population is not incompatible with lower levels of energy use, but that the rising levels of consumption in rich countries and “emerging” ones like Brazil, India and China certainly are.