Our climate is changing, and not subtly. And it's having a great and visible impact on the National Park System. We saw flooding and fires at units of the National Park Systems this year, as well as an ongoing historic drought thought to be the worst in 1,200 years.

Are those events the result of human-driven climate change, or simply the vagaries of weather? Today we're going to explore that question, and others tied to the weather we're experiencing, with Stephanie Kodish, the senior director and counsel for the National Parks Conservation Association's Clean Air and Climate programs.