For those who have to endure the toxic smog of northern China, it often comes as a surprise to learn that Chinese environmental laws and emissions regulations are some of the most stringent in the world.
Over the past 10 years, Chinese leaders have insisted that cleaning up an environment devastated by decades of dirty, energy-intensive growth is a top priority.
But each year the smog thickens and the ecological destruction continues, as officials at every level ignore environmental laws and regulations in their jurisdictions in favour of rapid annual expansion of gross domestic product.
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