EPA chief Lisa Jackson perpetually on Capitol Hill hot seat

At Friday's joint energy and environment subcommittee hearing, Jackson addressed familiar questions, most of them from Republican lawmakers. How would you describe carbon? "As black carbon soot," Jackson answered in part.
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"There's no strong consensus on whether carbon dioxide causes global warming or climate change. The court's ruling was based on a conclusion that such a consensus exists," Katz said.

"That's just total nonsense," Doniger said. "There's never been a scientific finding by the EPA better documented and better supported than the one that regulates greenhouse gases."
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At Friday's joint House budget hearing in the energy and power, and environment and economy subcommittees, Jackson worked hard to remain poker-faced as questions, sometimes odd, rained down.

"You used in your opening statement the term carbon pollution, would you describe that?" asked Rep. Joe Barton (R-Tex.). "That table in front of you is carbon. Carbon itself is not a pollutant."

Jackson said she was referring to carbons that clearly are pollutants, such as those in emissions that flow from the smokestacks of power plants, cement-mixing facilities and oil refineries in Barton's state.