Yellowstone National Park, US
The world’s first national park, Yellowstone sits atop a volcanic hotspot and straddles the borders of Wyoming, Idaho and Montana, where geysers, calderas and hot springs intersperse among canyons, rivers and lush grassland grazed by bison. The rewilding of Yellowstone is a classic case of the cascading ecological benefit caused by the reintroduction of a key predator….