The reintroduction of the grizzly bear into the northern Rocky Mountains has been rife with controversy — author David Knibb visited Boulder to discuss issues related to the grizzly.
By taming the water cascading down from the high mountains, water engineers turned the high-altitude, semi-arid desert of short-grass prairie into a lush, green urban landscape surrounded by irrigated farmland.
The USFWS said wolf populations have exceeded biological recovery goals and are now thriving.
The eight national park areas studied were Glacier, Mount Rainier, Olympic, Rocky Mountain, Sequoia & Kings Canyon, Denali, Gates of the Arctic and Noatak.
The removal of dams in northwestern Oregon provides insight into river water flow, sedimentation fluctuations and ecological changes.