A Coal Sequestration Illustration

I've contributed an illustration (see below) to this post on Skeptical Science:

http://www.skepticalscience.com/coal-natural-carbon-sequestration.html

The post argues that in terms of net energy gained and used, it is impractical to burn coal with the expectation that we can later capture the CO2 and sequester its carbon in a form that is as stable as the coal it came from.

jg