Climate change is one of the most divisive issues in our country today. But this wasn't the case 20 years ago. How did we get here?

Katharine Hayhoe is a climate scientist and chief scientist for The Nature Conservancy as well as a professor at Texas Tech University. And she's the author of a new book called Saving Us - a Climate Scientist's Case for Hope and Healing in a Divided World.

In this episode, Katharine explains how climate change became so polarizing, and how each of us can play a part in bridging the divide by starting conversations (even if we never use the words 'climate' and 'change' together.) She gives examples of how she, an evangelical Christian, talks to other Christians who may dispute the reality of climate change.

Katherine says altering the status quo is easier than we think: the most important thing we can do to curb climate change is talk about it.