Millions of people in China are breathing a cocktail of chemicals every day. These chemicals are mostly caused by man-made sources: coal-fired power plants, factories and vehicles. They are highly hazardous and responsible for heart disease, stroke, respiratory illnesses, birth defects and cancer in the country. I’m a Chinese, and I’ve been living there for several decades. Air pollution in China is absolutely not an exaggerating problem. The pollution-made haze or smog covers the land almost each day. Without a mask, it’s basically impossible to step out from your door. With a booming economy and increasing demand for energy, China has built new coal-fired power plants at an astonishing rate.…