Tom Gilks / Person dressed as a Polar bear holding a sign asking 'Has anybody seen my habitat?' Part of 'The Wave' climate change march ahead of the Copenhagen climate summit, near Big Ben, London, UK, 5th Decemb...

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, illuminated at night, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, silhouetted at sunset, London, UK 2008

Gavin Hellier / Millennium Ferris Wheel - London Eye and Big Ben, illuminated at night, London, UK 2008

Ben Lascelles / Northern Elephant Seal (Mirounga angustirostris) male, Piedras Blancas Elephant Seal Rookery, Big Sur, California, USA, January

Ben Lascelles / Northern Elephant Seal (Mirounga angustirostris) female calling, Ano Nuevo Elephant Seal Rookery, Big Sur, California, USA, January

Ben Lascelles / Northern Elephant Seal (Mirounga angustirostris) Ano Nuevo Elephant Seal Rookery, Big Sur, California, USA, January

Ben Lascelles / Iguazu waterfalls, Iguacu National Park, Argentina. October 2008.

Bertie Gregory / 2020VISION / Peregrine falcon (Falco peregrinus) flying above Big Ben, London, England, UK, July

Ben Osborne / African lions (Panthera leo) feed on carcass of an Elephant (Loxodonta africana) that they killed the previous night, Savuti, Northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / Solitary African elephant (Loxodonta africana) remains vigilant near African lions (Panthera leo) resting in background at a waterhole, Savuti, Northern Botswana. The animals are forced to share wate...

Ben Osborne / Solitary African elephant (Loxodonta africana) remains vigilant near African lions (Panthera leo) resting in background at a waterhole, Savuti, Northern Botswana. The animals are forced to share wate...

Ben Osborne / African lions (Panthera leo) feed on carcass of an Elephant (Loxodonta africana) that they killed the previous night. The lion on the right is threatening new arrivals off to the left of the picture....

Ben Osborne / African lioness (Panthera leo) carries a small freshly killed prey animal, Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / Solitary African elephant (Loxodonta africana) remains vigilant near African lions (Panthera leo) resting in background at a waterhole, Savuti, Northern Botswana. The animals are forced to share wate...

Ben Osborne / Lions (Panthera leo) remain vigilant near African elephants (Loxodonta africana) at a waterhole in northern Botswana. The animals are forced to share waterhole in dry season. Taken on location for B...

Ben Osborne / African lion (Panthera leo) juvenile washing paws, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) young male resting, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / Lioness (Panthera leo) stands near a herd of African elephants (Loxodonta africana) at a waterhole, showing size differential. Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / A young male African lion (Panthera leo) grooms a lioness, Savuti, Botswana. Taken on location for BBC Planet Earth series 2005

Ben Osborne / African lioness (Panthera leo) walks through dry savannah habitat, Botswana, taken on location for BBC Planet Earth, 2005

Ben Osborne / A young African lioness (Panthera leo) grooms a young male lion, Savuti, Botswana. Taken on location for BBC Planet Earth series 2005

Ben Osborne / African lions (Panthera leo) large pride rests in the late afternoon prior to heading out for a night hunt, Savuti, Northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) juveniles sleeping Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) young male yawning, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) juvenile sleeping on back, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / A young African lioness (Panthera leo) grooms a young male lion, Savuti, Botswana. Taken on location for BBC Planet Earth series 2005

Ben Osborne / A lioness (Panthera leo) pauses to stares into the photographers lens, Savuti, Northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) lionesses trying to bring down a young African elephant (Loxodonta africana) Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005 sequence 4/4

Ben Osborne / African lion (Panthera leo) pride of lions eats an Eland carcass under shrub for shade, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / A young male African lion (Panthera leo) grooms a lioness, Savuti, Botswana. Taken on location for BBC Planet Earth series 2005

Ben Osborne / African lion (Panthera leo) lionesses trying to bring down a young African elephant (Loxodonta africana) Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005 sequence 3/4

Ben Osborne / African lions (Panthera leo) cross a dirt track in front of a Landrover, Savuti, Northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) lionesses hunting young African elephant (Loxodonta africana) Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005 sequence 1/4

Ben Osborne / African lion (Panthera leo) lionesses hunting young African elephant (Loxodonta africana) Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005 sequence 2/4

Ben Osborne / Lion and lionesses (Panthera leo) interact beside a waterhole in northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) pride feeding on African elephant (Loxodonta africana) that they have just killed at night, Savuti, northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lioness (Panthera leo) sits with juvenile, Botswana, taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) big male lion walking portrait, Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) young male lion plays with a cub - possibly to assert dominance. Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lion (Panthera leo) male portrait, Savuti, Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / African lions (Panthera leo) drinking at waterhole in northern Botswana. Taken on location for BBC Planet Earth series, 2005

Ben Osborne / A pride of African lions (Panthera leo) feed on the carcass of an African elephant (Loxodonta africana)they hunted and killed the previous night and have returned to finish eating the meat off the car...

Ben Osborne / African lions (Panthera leo) feeding on an African elephant (Loxodonta africana) that they have just killed. Night image taken on infra red. Savuti, Northern Botswana. Taken on location for BBC Plan...

Ben Osborne / Lions (Panthera leo) drinking at a waterhole at night, watched by an Elephant (Loxodonta africana) Infra red image, Savuti, Northern Botswana. Taken on location for BBC Planet Earth series 2003

Ernie Janes / Silhouette of Big Ben and Houses of Parliament on the River Thames at dusk, London, UK, November 2005

Ernie Janes / Silhouette of Big Ben clock tower and The Houses of Parliament on the River Thames at sunset, Westminster, London, UK

Tom Gilks / Protesters near Big Ben at dusk, part of 'The Wave' climate change march ahead of the Copenhagen climate summit, signs stating 'I vote to stop climate chaos' London, UK, 5th December 2009

Peter Lewis / The Houses of Parliament, Big Ben and the River Thames, Westminster, London, England

Peter Lewis / Big Ben, the Clock Tower of the Palace of Westminster, houses the world's largest four faced chiming clock, in the second largest free standing clock tower in the world, London, UK

Peter Lewis / Big Ben, the Clock Tower of the Palace of Westminster, houses the world's largest four faced chiming clock, in the second largest free standing clock tower in the world, London, UK

Peter Lewis / Big Ben, the Clock Tower of the Palace of Westminster, houses the world's largest four faced chiming clock, in the second largest free standing clock tower in the world, London, UK

Peter Lewis / Double decker red bus crossing Westminster Bridge with Big Ben and the Houses of Parliament in the background, London, UK

Michael Durham / Allen's Big-eared Bat (Idionycteris phyllotis) reasearcher, Ben Solvesky, radio tracking female he had placed a transmitter on the night before, Arizona

Julia Bayne / Big Ben clock tower at Parliament Square, London, and bus on the move, England.

Jose B. Ruiz / Houses of Parliament and Big Ben, Westminster, London, UK. Double decker bus crossing bridge

Jose B. Ruiz / Houses of Parliment and Big Ben, Westminster, London, UK.

Jose B. Ruiz / Houses of Parliment and Big Ben, Westminster, London, UK. Double decker bus.

Jose B. Ruiz / The River Thames with Houses of Parliment and Big Ben, Westminster, London, UK.

Julia Bayne / Big Ben and Houses of Parliament from across the river Thames, Westminster, London,

Anup Shah / Resting Bengal tigress{Panthera tigris tigris} India Ranthambhore NP, Rajasthan. Bakola Ben