Cross-posted from Climate Progress.

Did you see the big smackdown Thursday night between MSNBC’s Rachel Maddow and Sen. James Inhofe (R-Okla.)? The dean of disinformation mostly just repeated his well-worn falseshoods about global warming, which Maddow shot down.

But there was one remarkable admission from the former chair of the Senate Environment Committee:

I was actually on your side of this issue when I was chairing that committee and I first heard about this. I thought it must be true until I found out what it cost.

In short, learning about the (supposed) high cost of the solution is what turned him from a believer in climate science to a denier.