science, but political science of man made global warming. >> that was rick santorum last night in wisconsin and still with me at the table are serene jones, rich gailen, obery hends ricks and lizz winstead. >> last living person that cares. >> about rick santorum. what i find interesting about that moment, and i actually think representative of some of the kind of climate change denialism, it's rooted in the question of how do we determine if something is true or not? do we determine it with a faith claim? i believe this book is true and because this book is true, i derive heez policies from it. or any basis of which we have some agreements about how we adjudicate a truth claim? it feels like it's hard to move forward in equality with differences in faith-based opinions if we don't have some things we can say we agree that the sun comes up here, and sets here and that we can adjust a