In a May 2014 report, <a href="http://www.ucsusa.org/assets/documents/global_warming/National-Landmarks-at-Risk-Full-Report.pdf">National Landmarks at Risk: How Rising Seas, Floods, and Wildfires are Threatening the United States’ Most Cherished Historic Sites</a> the Union of Concerned Scientists (UCS) discusses the risks of global climate change as they apply to United States National Landmarks.