http://www.wired.com/culture/design/multimedia/2007/04/PL_home

"...the world's first green city, every block engineered in response to
China's environmental crisis: ...Overcultivation, overgrazing and a
massive timber consumption have turned a quarter of China's land into
desert.  Over 400 million Chinese drink contaminated water.  The
government figures that 300,000 people die prematurely each year from
polluted air."