Feb 22, 2013
NC State Research Helps Shape Yellowstone ‘Winter Use’ Plan
Editor’s Note: This is a guest post by Dr. Chris Frey, distinguished university professor of civil, construction and environmental engineering. Frey is also chair of the EPA Science Advisory Board’s Clean Air Scientific Advisory Committee. On February 22, the National Park Service released a plan to guide winter use of over snow vehicles (OSVs), including snowmobiles and…