National Public Radio: As a photographer, how do you visualize something that can't always be seen? Like, how do you show the complex relationships between water, energy and modern society? It's not easy, but that was my task as I worked on a photo essay for a capstone class at Ohio University last fall about life along the upper Colorado River. Before graduate school, I lived in Aspen, Colo., for nearly five years. I was often skiing, rafting and biking all of which are dependent on the river. Then, in December 2012,...