Global warming an “unnatural disaster” for national parks

The nonprofit National Parks Conservation Association (NPCA) called global warming an "unnatural disaster" for America's national parks, and called on Congress and the Administration to take action now before the centennial of the park system: New Report Labels Global Warming an “Unnatural Disaster” for America's National Parks.

See the NCPA's report: Unnatural Disaster: Global Warming and Our National Parks (pdf).