Earlier quoted context omitted.
Simple thermodynamics. We get energy from coal by burning it then extracting some of the heat. The waste products are basically carbon dioxide and heat. Clean coal is about capturing that carbon dioxide, which means spending energy to separate the CO2 from other gasses, then liquefy it. This sequestration process costs about 30% of the energy originally extracted from the coal. I fully support clean coal since it inc…
'clean coal' can also mean coal burned without harmful particulates/elements entering the atmosphere. CO2 is not really a 'dirty' emission.
"The current episode of global warming is attributed to increasing emissions of CO2 and other greenhouse gases into Earth's atmosphere. " - https://en.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_at...
Also in the first few lines of wikipedia you will see that C02 is only 0.04% of the atmosphere. This small percentage has huge effects.