"I remember at one point going out to do a story, just after the [1979] Church Rock uranium spill, and there were children out playing in the water and in the livestock and the Navajo speakers were saying, "We need a word." How do we come up with a word that will tell the people that even though you can't see it, there is something dangerous here that can harm you and you can't use these waters, when it was the only source of water for their livestock?"