[subterfuge]

And the Category 5 denial is an enormous obstacle to any discussion of solutions.

For the life of me, I cannot figure out what this sentence means.

[Still Thinking]

A "Category 5" tornado is like the tornado of the century, so "category 5" denial is Gore-bal Warming's way of stamping his fat little feet and saying "Wahhhh, wahhhh, nobody's listening to me! Wahhhhh"