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

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

NSP408035: Adelie penguin (photo) / Bridgeman Images

NSP408053: Interior view (photo) / Bridgeman Images

NSP408095: Gentoo penguin (photo) / Bridgeman Images

NSP408098: Old stove (photo) / Bridgeman Images

TDR408128: Inuk looking out for polar bears by standing on a pressure ridge, April 1995 (photo) / Bridgeman Images

HGP407753: Pargetting on the High Street (photo) / Bridgeman Images

HGP407756: View of Hebden Bridge, Calderdale, West Yorkshire (photo) / Bridgeman Images

XIR407868: Dancer with tambourine (stone) / Bridgeman Images

NSP407904: Oystercatcher at roost (photo) / Bridgeman Images

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

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

NSP407974: Women of the Himba tribe, with distinctive ankle bracelets (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

NSP408058: King penguin (photo) / Bridgeman Images

NSP408061: Koala at Sydney Wildlife World (photo) / Bridgeman Images

NSP408097: Old tins in the kitchen (photo) / Bridgeman Images

TDR408112: Anemone at 5 metre depth, June 1980 (photo) / Bridgeman Images

TDR408124: Autumnal spider's web, April 1988 (photo) / Bridgeman Images

TDR408130: Desert elephants, November 1998 (photo) / Bridgeman Images

HGP440013: Canons Ashby House, Northamptonshire, England (photo) / Bridgeman Images

HGP440020: Painted ceiling in John Knox House, Edinburgh (photo) / Bridgeman Images

HGP440029: Chapter House of Elgin Cathedral, Moray, Scotland (photo) / Bridgeman Images

HGP440042: Angel with Scroll (stained glass) / Bridgeman Images

HGP440054: Entrance to the Quadrangle, King's College, Old Aberdeen (photo) / Bridgeman Images

HGP440107: Saxon central tower, All Saints Church, Newton by Castle Acre, Norfolk, UK (photo) / Bridgeman Images

HGP440149: View of the town of Peebles and the River Tweed, Scotland (photo) / Bridgeman Images

KDC441040: Letter written by David Hume to Richard Davenport referring to the great difficulties of his relationship with Jean-Jacques Rousseau, Rousseau's refusal to accept a pension and his quarrels with Hume, 8 July, 1766 (pen & ink on paper) / Bridgeman Images

KDC441047: Extract from King Edward VI's diary describing his sister Mary's visit to him at Westminster, his attempts to persuade her to change her practice of religion and to cease attendance at the Catholic Mass, 18-20 March, 1551 (pen & ink on vellum) / Bridgeman Images

KDC441053: Letter from Richard Cobden to Theodore Benard on the subject of the importance of free trade between all nations, 13 September, 1848 (pen & ink on paper) / Bridgeman Images

GDG442259: Street merchant with his family, Haret el Medah street, Cairo, 2007 (photo) / Bridgeman Images

SGM443221: Mosque of the Bardo Museum (photo) / Bridgeman Images

SGM443224: Lone column, ruins of Antonine Roman thermal baths (photo) / Bridgeman Images

SGM443227: Overview of Sidi Bou Said village (photo) / Bridgeman Images