I've been following Katharine for years. If you don't know of her, after our conversation, watch her TED talk and read her book, Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World. It comprises decades of science, leadership, and efforts to live sustainably, the overlap I consider essential to influencing people on sustainability. Our conversation is about hope, faith, science, love, and our sledding hills. We know the science, but enough to know not to dwell it it, but to know what we're talking about. Then we apply our values to determine what to do. She's worked at this leading in sustainability to know what to do, and it's not just to focus on the science. The value of our actions is not just the footprint but our shadow: whom we affect. The reason to act is not for an abstract "environment" but for our values, especially shared ones. Connect with people, including ourselves, on what we care about. The goal isn't to lecture people but to help connect the dots between what they care about and sustainability, which affects all of us and everything we do, so we can always know how to connect those dots. It may take practice. Read her book. Start now.