A C-17 Globemaster ejects a supply load of pallets during Operation Koranai Permakhtag. StocktrekImages
Polar Bear (Ursus Maritimus) Standing On A Piece Of Floating Ice; Coburg Island, Nunavut, Canada PacificStock
A dead tree is silhouetted against the sky; Tahlequah, Oklahoma, United States of America PacificStock
Tree branches covered in hoar frost against a blue sky; Anchorage, Alaska, United States of America PacificStock
USA, Grand Teton National Park; Wyoming, Mount Moran In Distance, Landscape Of Oxbow Bend On Snake River PacificStock
Native youth riding Snowmachine on overflow ice, Inukpasugruk (Giant) Creek, Anaktuvuk Pass, Gates of the Arctic National Park, Brooks Range, Northern Alaska, USA. PacificStock
Ice forms on the shores of Hudson Bay as sunset starts to light up the clouds; Churchill, Manitoba, Canada PacificStock
A Swallowtail Butterfly seeks nectar from a butterfly bush; Astoria, Oregon, United States of America PacificStock
School of Grey reef sharks (Carcharhinus amblyrhynchos) at the surface of the water off the island of Yap; Yap, Micronesia PacificStock