NSP407933: Humpback whale, during filming for 'Planet Earth', 2006 (photo) / Bridgeman Images

NSP407934: Humpback whale, during filming for 'Planet Earth', 2006 (photo) / Bridgeman Images

NSP407940: Eider duck near Sanikiluaq, during filming for 'Planet Earth', March 2006 (photo) / Bridgeman Images

NSP407945: Gentoo penguin (photo) / Bridgeman Images

NSP407946: Weddell seal lying on ice floe (photo) / Bridgeman Images

NSP407950: Dancers at Rio Carnival (photo) / Bridgeman Images

NSP407951: Underwater view of a reef with sponges and corals (photo) / Bridgeman Images

NSP407956: Polar bear mother and cubs on sea ice, en route to North Pole, July 2007 (photo) / Bridgeman Images

NSP407960: Polar bear mother and cub en route to North Pole, July 2007 (photo) / Bridgeman Images

NSP407963: Lone polar bear in the Arctic Ocean, en route to North Pole, July 2007 (photo) / Bridgeman Images

NSP407964: Russian nuclear icebreaker Yamal travelling through ice en route to the North Pole (photo) / Bridgeman Images

NSP407974: Women of the Himba tribe, with distinctive ankle bracelets (photo) / Bridgeman Images

NSP407975: Aerial view of a Himba village (photo) / Bridgeman Images

NSP407989: Aerial view of sand dunes (photo) / Bridgeman Images

NSP407995: Lion rests next to the carcass of a young elephant killed by lions (photo) / Bridgeman Images

NSP407997: Underwater view of a diver filming barrel sponge and coral reef (photo) / Bridgeman Images

NSP407999: Underwater view of fish including sergeant majors on coral reef (photo) / Bridgeman Images

NSP408020: Emperor penguin with a young chick at the rookery (photo) / Bridgeman Images

NSP408027: Chinstrap penguin, November 2008 (photo) / Bridgeman Images

NSP408029: Icebergs in the Ross Sea (photo) / Bridgeman Images

NSP408035: Adelie penguin (photo) / Bridgeman Images

WTL482876: Robert Wagner Park near Battery Park (photo) / Bridgeman Images

WTL482880: Wall Street, New York (photo) / Bridgeman Images

WTL482882: Financial District near Wall Street (photo) / Bridgeman Images

WTL482884: US Custom House (photo) / Bridgeman Images

WTL482890: Ground Zero (photo) / Bridgeman Images

WTL482893: The Bell of Hope outside St Paul's Chapel (photo) / Bridgeman Images

WTL482902: US Courthouse from Foley Square (photo) / Bridgeman Images

WTL482904: Statue of Liberty on Liberty Island (photo) / Bridgeman Images

WTL482914: Statue of Liberty on Liberty Island (photo) / Bridgeman Images

WTL482921: View of Ellis Island from the Liberty Island ferry, New York (photo) / Bridgeman Images

WTL482925: Cables on Brooklyn Bridge (photo) / Bridgeman Images

WTL482926: School bus in Brooklyn (photo) / Bridgeman Images

WTL482932: Prospect Park in Brooklyn (photo) / Bridgeman Images

WTL482938: Bronze Statue of President Theodore Roosevelt outside the American Museum of Natural History (photo) / Bridgeman Images

WTL482949: Seagram Building on Park Avenue in midtown Manhattan (photo) , Mies van der Rohe, Ludwig (1886-1969) / Bridgeman Images