Summary: <p>CLIMATE CHANGE IN OUR NATIONAL PARKS (REBROADCAST): Imagine Joshua Tree National Park with no Joshua trees, or Glacier National Park minus the glaciers. The director of the National Park Service says climate change is the biggest threat the agency has faced in its nearly 100-year history — and it could make both scenarios a reality. He joins Kojo to talk about how the Park Service is re-thinking its stewardship mission and what lies ahead for the nation's natural treasures. (52 min.)</p>
