Steven Kazlowski / Polar bear (Ursus maritimus) mother with cub, newly emerged from their den on the Arctic coast, eastern Arctic National Wildlife Refuge, Alaska

Steven Kazlowski / Polar bear (Ursus maritimus) sow with her cubs, newly emerged from their den on the Arctic coast, eastern Arctic National Wildlife Refuge, Alaska

Erlend Haarberg / Crowberry (Empetrum nigrum) with ripe berries growing around fallen tree trunk, Ovre-Pasvik National Park, Finnmark, Norway, August

Erlend Haarberg / Two Common / Mew gulls (Larus canus) one standing on rock, the other sitting, Ovre-Pasvik National Park, Finnmark, Norway, May

Erlend Haarberg / Snow formations, Ovre-Pasvik National Park, Varanger, Finnmark, Norway, February 2007

Erlend Haarberg / Pine forest, Ovre-Pasvik National Park, Varanger, Finnmark, Norway, August 2006

Erlend Haarberg / Person in canoe on Lake Ellenvatn, Ovre-Pasvik National Park, Varanger, Finnmark, Norway, July 2006

Erlend Haarberg / View accross Lake Ellenvatn, Ovre-Pasvik National Park, Varanger, Finnmark, Norway, July 2006

David Woodfall / Male Polar bears (Ursus maritimus) two asleep in day snow beds, Wapusk National Park, Churchill, Manitoba, Canada, December 2004

Bryan and Cherry Alexander / Dawn in Kejser Franz Joseph Fjord, with the amazing Eleonora Sediment layers, bright and twisted. East Greenland National Park, September 2005.

Bryan and Cherry Alexander / Caribou / Reindeer (Rangifer tarandus) being satellite tagged before release. Ellesmere Island, National Park Reserve, Nunavut, Canada, 1994.

Bryan and Cherry Alexander / Ice floes in Discovery Harbour. Ellesmere Island National Park Reserve, Nunavut, Canada, 1994.