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“ But the U.S. Energy Secretary is not just unaware of the science; when presented with it, he’s sure it can’t be true. That’s what makes him a denier and not a skeptic.”

It doesn’t get any clearer than that. Science has concluded, and it continues to collect data to modify its stance. Until something huge comes up to turn things upside down, people like Perry need to keep their mouths shut and administrative tongues to themselves.