XI ZHINONG / Tibetan antelope (Pantholops hodgsonii) crossing road infront of a truck, Kekexili, Qinghai, China, January

Martha Holmes / Royal Navy helicopter (mounted with Gyron) parked at Rothera, British Antarctic Survey base. Antarctic Peninsula. February 2008. Taken on location for BBC tv series 'Life'

Bryan and Cherry Alexander / Sign warning of dog sleds on ice road between Thule Air Base and Dundas. Northwest Greenland, 1980.

Uri Golman / Helicopter, Air Greenland, local transport, Constaple Point, North East Greenland. February 2009.

Juan Carlos Munoz / Aerial view of truck approaching isolated building in the Namib desert, seen from a hot air balloon, Sossusvlei, Sesriem, Namib desert, Namibia, August 2008

Adrian Davies / Mobile Air quality monitoring unit beside a road in Richmond, London, UK

Suzi Eszterhas / Polar Bear {Ursus maritimus} biologists follow mother and cub tracks from the air by helicopter, Wapusk NP, Manitoba, Canada

Anup Shah / African safari with minibus and hot air balloon, Masai Mara, Kenya

Julia Bayne / Clifton Suspension Bridge and hot air balloons Bristol, Avon, UK

Pete Oxford / Hot air balloon safari about to take off. Sossusvlei, Namibia. 2002