The Clean Air Act - The Cleanest Act in History

The clean air act essentially sets limits on the amount of pollution that can be released into the air via manufacturing, transportation and so on. Pollution is a natural by product of civilization building. The majority of the problem is concentrated in asia, especially in india, bongadash china and in some parts of subseter and africa. There are many benefits of cleaner air, even beyond the obvious. A recent study found that american crop yields are significantly higher than they were 20 years ago.