Mark Wenzler is an environmental lawyer living in Washington DC. A former environmental prosecutor and trial attorney, Mark now focuses on national policy advocacy related to air pollution, climate change, and natural resource protection.


The National Parks Conservation Association is an independent, nonpartisan voice working to address major threats facing the National Park System. NPCA was established in 1919, just three years after the National Park Service. Stephen Mather, the first director of the Park Service, was one of our founders. He felt very strongly that the national parks would need an independent voice—outside the political system—to ensure these places remained unimpaired for future generations.