George Wuerthner:  The Greater Yellowstone Ecosystem is the largest intact temperate ecosystem in the world. ,,, Across the globe, large, protected areas have been shown repeatedly to be the best way to preserve evolutionary processes and biodiversity. … Depending on how you define the borders, Greater Yellowstone Ecosystem (GYE) is anywhere from 20-23 million acres. … National Park management seeks to preserve evolutionary and ecological processes, not just species. … Read here …