The National Parks Conservation Association released a comprehensive report yesterday that paints a grim picture for the future of the national parks in the U.S. The report, which is entitled "The State of America's National Parks," examines a number of economic and environmental threats to the parks and is the result of more than a decade of research. The non-profit NPCA also calls on the Obama Administration to address those threats while developing a comprehensive plan for the future, ahead of the 2016 centennial of the National Park Service.

The report, which can be read in it's entirety here, identifies a number of challenges to the future of America's national parks. The threats, which are both old and new, include pollution, invasive species, climate change, and continued funding shortfalls, amongst others. The NPCA goes on to say that many of these threats are already having a real and dramatic impact on the parks. During their research they found that 63% of the parks surveyed had issues with air quality to some degree or another. Others were found to have poor water quality as well, while a staggering 95% of the parks assessed had lost at least one plant or animal species over the course of the past ten years.