Today, there are many national parks and reserves in the United States that preserve our country's beauty and wildlife. This is the story of the United States National Park Service, from its creation by Woodrow Wilson in 1916 to its evolution through the decades, including its counterparts around the world and the legal and political challenges it faces today.

As the National Park Service prepares for its 2016 centennial, this book provides an in-depth analysis of the role of philanthropy and the national parks - exploring the challenges faced when working with non-profit philanthropic partners.

Considers the winter opening, operation, and maintenance of roads in Yellowstone National Park by the National Park Service. Hearing was held in Jackson, Wyo.

A variety of air pollutants are emitted into the atmosphere from human-caused and natural emissions sources throughout the United States and elsewhere. These contaminants impact sensitive natural resources in wilderness, including the national parks. The system of national parks in the United States is among our greatest assets. This book provides a compilation and synthesis of current scientific understanding regarding the causes and effects of these pollutants within national park lands. It describes pollutant emissions, deposition, and exposures; it identifies the critical (tipping point) loads of pollutant deposition at which adverse impacts are manifested.