With its parks, centuries-old palaces, history and culture, Beijing should be one of the more pleasant capitals of the world. Instead, it’s considered among the worst to live in because of chronic air pollution.

Lung cancer rates are rising among the 20 million residents of China’s capital, health officials say. For many multinational companies, Beijing is considered a hardship posting and, despite the extra allowances that classification brings, some executives are leaving.

via Greyjing? Air pollution fouls Beijing’s name | Reuters.