Expedition zodiacs, Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Grise Fjord, most northern community in America, Nunavut, Canadian Arctic, Canada, North America

Polar bear tracks, Baffin island, Nunavut, Canadian Arctic, Canada, North America

Cheetah (Acinonyx jubatus), Kgalagadi Transfrontier Park, Northern Cape, South Africa

View over Nuuk, capital of Greenland, Denmark, Polar Regions

Mourne Mountains, County Down, Ulster, Northern Ireland, United Kingdom, Europe

Humberstone Saltpeter Works, UNESCO World Heritage Site, northern Atacama, Chile, South America

Rugged terrain at Katherine Gorge, Nitmiluk National Park, Northern Territory, Australia, Pacific

Stones, bark and leaves in dirt at King's Canyon, Northern Territory, Australia

Jeep on dune, Ubari desert, Libya

European brown bear (Ursus arctos) walking through swampy terrain, autumn, rear taiga, northern Finland, Finland, Europe

Jeep on dune, Ubari desert, Libya

Jeep on dune, Ubari desert, Libya

Jeeps in front of sand dunes, Murzuq desert, Libya