't realize the in-depth that the good stewards in the national parks went to. Often, we'd be accused of studying things to death. If you didn't hold that position during her tenure as director. When I reached Ms. Mainella at Clemson University, where she’s a visiting scholar, she explained that as Park Service director she did not hold the final decision on snowmobiling in Yellowstone. MAINELLA: All I can say is that those decisions, I chose to have my discussions in the 'll do another study. But I will say over time that I've come to really appreciate that, that we make good decisions based on good information. KURT: Despite those words, don’t you still wonder whether science or politics are guiding snowmobiles in Yellowstone? SOUND: Snowmobiles in Yellowstone National Park. KURT: At the National Parks Traveler, I’m Kurt Repanshek