This is under the guise that CO2 is a deadly toxin and creates climate change. Coal burning can also create sulfur and mercery emissions, which are more proven to be harmful than CO2, but are emitted at rates that pale in comparison to CO2. I actually wrote some industry analysis back in college for a firm that wanted to "trap" carbon emissions from coal power plants in order to recycle its use in some capacity. The idea is that the CO2 combustion could be used a catalyst to drive some other type of energy production, such as the mining of coal itself. I think there are a few power plants now that have actually succeeded in converting CO2 emissions to be used in useful fossil fuel extraction downstream, which is a pretty cool idea. But like I said, this idea was created under the assumption that CO2 is driving climate change. Climates have always changed.
