Sulphate particles? Don't we make them, too?

Right again. One of the nice ironies of this story is that sulphate particles (acid rain) from burning coal and oil help to shield the more industrialised countries from the full impact of global warming. In some places, such as central Europe and parts of China, they may have overwhelmed the warming, producing a net cooling. 

Other aerosols, such as dust from soil erosion and "desertification" can also moderate warming. But even if you find the idea of using one form of pollution to protect us from another, there is a problem. Whereas the average CO₂ molecule in the atmosphere lasts for about a century, sulphates and other aerosol molecules persist for only a few days. 

This means two things. First, if you turned down the power stations, the world would get much hotter within a few days. Second, aerosols do not accumulate in the atmosphere in the way that CO₂ does. If you carry on burning a given amount of fossil fuel, the cooling effect of the sulphates will remain constant, while the warming effect of CO₂ will keep on increasing. So sulphates are not a solution.