Convening natural and social scientists, managers and practitioners to launch a Second Century of stewardship for the parks, 100 years after the historic meetings at UC Berkeley that helped launch the National Park Service (NPS), this summit (March 25-27, 2015) at UC Berkeley features visionary plenary lectures by leading natural, physical and social scientists, plus strategic conversations on current controversies led by panelists representing diverse viewpoints, and concurrent sessions of contributed papers and posters.