Katmai National Park & Preserve in Alaska provides some of the few remaining unaltered habitats for bears. With about 2,200 brown bears in the park, scientists are able to study bears in their natural habitat, visitors are able to enjoy unparalleled viewing opportunities (from safe distances) and the bears are able to continue their life cycle largely undisturbed. Photo by Mike Clime (http://ift.tt/18oFfjl).