Read this article today, ‘Could ‘Clean Coal’ Finally Live up to Its Name? (http://www.smithsonianmag.com/ideas-innovations/Could-Clean-Coal-Finally-Live-up-to-Its-Name-208382461.html).
It explains the meaning of what is clean coal and the process of how to make the coal ‘clean’. The ongoing debate of coal vs natural gas as a fuel source is interesting. With the uncertainty of natural gas pricing, coal is still a preferred choice due to low cost and a large surplus. For a power starving earth hungry for cheaper energy, clean coal is certianly one of the option moving forward.