By the end of 2007 mankind will become a primarily urban species with more than half of the world’s 6.6 billion population living in urban areas. This trend for urban living has gripped China, and it is estimated that 600 million people in China will have moved from rural areas to the cities by 2050.

The relentless march of urbanisation goes hand in hand with a vast increase in energy consumption and pollution. In fact, China recently became the world’s second largest consumer of energy, after the United States.This trend is widely recognised as being unsustainable and consequently a new approach is required to find a sustainable lifestyle for the cities of tomorrow.
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