I still remember 2001 when I first arrived at Hongkong to work. My first day at the office, I got teary eyed. I told my boss why is it so..he told me it's because of the pollution and I should drink lots of water.
It is probably way lot worse now. I saw this documentary recently, https://www.youtube.com/watch?v=T6X2uwlQGQM it is a good watch. FYI China is also destroying marine life in the West Philippine Sea http://globalnation.inquirer.net/120699/ph-slams-china-for-d... http://www.philstar.com/headlines/2014/05/12/1322282/photos-...