Ryan Avent has a devastating post on the incompatibility of climate science and some libertarians at CATO:
...confronted by a problem demanding solutions inimical to libertarian beliefs, libertarians were faced with the choice of reneging on their beliefs or turning their back on science. Tellingly, they chose the latter. One might think that’s a rather drastic decision, given the role scientific endeavors have played in delivering the material prosperity so dear to the hearts of the libertarian world, and one would be right.
A belief system that cannot grapple with the fundamental reality of a situation is, quite simply, not a belief system worth having.
Not all libertarians are in denial about the science, and some even have ideas about how to counter climate upheaval without cap and trade.