Beijing's air quality is not so good as before. Recently at a conference of the SEPA and a corporation of Inner Mongolia Autonomous Region, the burning coal again attracted attentions of the concern leaders and experts. Resolving Beijing's soot pollution is an important matter among those important. Experts strictly test and analyze that the three big air pollutants are soot, dust powder and vehicle tail gal in Beijing. 90% of the CO₂ in the air was caused by the coal...