The world population is now over 7 billion and is increasing by 90 million a year. Human numbers are expected to grow to between 8 and 11 billion before leveling off later in the 21st century. 


Population growth has levelled off in the highly developed countries over the past few decades; but these industrialised states are now supporting the maximum numbers that can be sustained in the short term, and the citizens consume around 30 times as much energy and resources as those of the Third World. For example, the 120 million Japanese have a greater damaging impact on world resources than the whole of the population of India and China put together.

Read More: The Space Available to Us

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