[Extremely Extreme Extremist]

Your question is based on a false premise and a false definition of "market" that is quite understandable under the current legal framework. A true market system would internalize the costs of pollution on the producer. In other words, the "cheapest energy sources," as you call them, are only cheap because currently the costs of the environmental harm you identify are not being included or internalized, as economists would say, into the cheap energy sources.

Can you imagine the other candidates giving an answer like that? Paul absolutely ate this guy's lunch with this answer.

[traviskicks]

He gave a similar response in an interview on healthcare from someone at the kaiser foundation, it was great, destoyed their premise on their idea of what insurance was.