China's Massive Pollution Problem

I guess most of the pepole have seen  a photo or movie of serious pollution in China through massmedia. Especially, it is said that you can't see even the very front of you in Beijing. Given the fact that polluted air is bad for not only the environment but also humans' health, this situation must be impoved with help from other countries as soon as possible.

The one of the major reasons of this problem is exhaust gas from factories which do not have enough facilities. They emit a lot of chemical substances into air. Of course this may be a fault of China(government should control those factories by law), but I think some of the factolies in China are not Chinese company's one but other developed country's one like U.S and Japan. Dr.Davis in California university also points out that Western countries have responsibility for part of the pollution in China. I believe Japanese pepole should not think it is only China's duty to improve this issue and think more carefully about the environment.