In today’s culturally polarized society, discussing whether the planet is warming and if humans have an impact on the climate is a topic that’s often avoided. Why? Because speaking about it can be akin to touching the “third rail” of religion and politics. Us & Them’s Trey Kay speaks with a person whose professional and personal lives revolve around the highly charged topic of climate change. Katharine Hayhoe is a respected climate scientist, as well as a devoted evangelical Christian – two descriptions that some Americans don’t think naturally go together.