Andy Rouse / Polar Bear (Ursus maritimus) portrait in sea-ice landscape. Wide angle / fish-eye shot. Svalbard, Norway, September.

Alex Hyde / Ratcliffe-on-Soar coal-fired power station cooling towers. Nottinghamshire, UK, January 2013.

Alex Hyde / Ratcliffe-on-Soar coal-fired power station cooling towers. Nottinghamshire, UK, January 2013.

Jean E. Roche / Rhone Glacier scarring in 2004, with buildings in foreground. Compare with image 1403312 showing signs of glacial retreat.

Jean E. Roche / Reproduction of early 20th century postal card possibly by Chr. Brennenstuhl, showing glacier 'Rhone Glacier' in Swiss Alps and mountains with buildings in foreground. Compare with image 01403313 show...

Eric Baccega / Young Inuit boy jumping over a crack on ice floe, Ellesmere Island, Nanavut, Canada, June 2012. Model released.

Steven Kazlowski / Young Polar bear (Ursus maritimus) in the water along the coast of the Beaufort Sea, Bernard Spit, off the 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, Oc...

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Remnant saltmarsh and coastal realignment at Abbotts Hall Farm, Essex, UK, March 2012. Did you know? 24% of the English coastline is saltmarsh.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012. Did you know? Salt marshes are a great natural defence against sea level rise.

Terry Whittaker / 2020VISION / Saltmarsh and reclaimed agricultural land from the air. Abbotts Hall Farm, Essex, UK, March 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / Water channels making patterns in saltmarsh, seen from the air. Abbotts Hall Farm, Essex, UK, April 2012.

Terry Whittaker / 2020VISION / View of regenerated saltmarsh landscape around Abbots Hall Farm Nature Reserve at high tide, providing both a rich wildlife habitat and greater flood protection from sea level rise, Essex, England, UK...

Terry Whittaker / 2020VISION / Common glasswort (Salicornia europaea) growing on regenerated saltmarsh habitat, Abbotts Hall Farm Nature Reserve, Essex, England, UK, July

Terry Whittaker / 2020VISION / Saltmarsh at twilight, with lights of Bradwell-on-Sea in the background, Abbotts Hall Farm Nature Reserve, Essex, England, UK, July 2011

Brent Stephenson / A large hole in an iceberg with icicles hanging. Yalour Islands, Antarctic Peninsula, Antarctica, December.

Brent Stephenson / Huge iceberg with streaked sky under expansive open sky. Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Large growler berg in the Lemaire Channel. Antarctic Peninsula, Antarctica, January.

Andy Rouse / Waterfall and ice cliff catching evening light. Austfonna Polar Ice Cap, Svalbard, Norway, August 2011.

Andy Rouse / Waterfall from ice cliffs with ice-cap stretching into the distance. Austfonna Polar Ice Cap, Svalbard, Norway, August 2011.

Andy Rouse / Ice cliff and waterfall catching evening light. Austfonna Polar Ice Cap, Svalbard, Norway, August 2011.

Andy Rouse / Waterfall from ice cliffs with ice-cap stretching into the distance. Austfonna Polar Ice Cap, Svalbard, Norway, August 2011.

Matthias Breiter / Meltwater lakes on Hubbard Glacier, Wrangell-St. Elias National Park, Alaska

Andy Rouse / Polar Bear (Ursus maritimus) crossing pack ice. Svalbard, Norway, September.

Andy Rouse / Polar Bear (Ursus maritimus) sleeping on pack ice. Wide angle / fish-eye shot. Svalbard, Norway, September.

Ole Jorgen Liodden / Polar Bear (Ursus maritimus) sitting on floe in vast thawing sea-ice landscape. Spitsbergen, Svalbard, August 2011. Second place, Mammals Category, GDT 2012 competion. Winner in ANIMALS IN THEIR ENVIR...

Ole Jorgen Liodden / Black-legged Kittiwake (Rissa tridactyla) in blue ice. Spitsbergen, Svalbard, July.

Ole Jorgen Liodden / Polar Bear (Ursus maritimus) in arctic ice landscape backlit by midnight sun. Nordaustlandet, Svalbard, August.

Ole Jorgen Liodden / Detail of blue iceberg. Spitsbergen, Svalbard, August.

Ole Jorgen Liodden / Polar Bear (Ursus maritimus) looking across ice floe seascape. Nordaustlandet, Svalbard, August.

Ole Jorgen Liodden / Polar Bear (Ursus maritimus) profile in silhouette. Nordaustlandet, Svalbard, August.

Nuno Sa / Whale Shark (Rhincodon typus) accompanied by Pilot Fish (Naucrates ductor) and Remora. The biggest fish in the world has only started to visit the Azores in the past three years due to water temperatu...

Jenny E. Ross / Polar Bear (Ursus maritimus) sub-adult male on cliff searching for eggs in Brunnich's Guillemot nests, as gulls look on from above. This unusual behaviour happens when when lack of sea-ice prevents t...

Georgette Douwma / Bubble Tip Anemone (Entacmaea quadricolor). The tentacles are usually a dull brown, but this anemone is partially bleached and has lost most of the endosymbiotic zooxanthellae. Raja Ampat, West Papua,...

Bryan and Cherry Alexander / Drygalski Glacier, which receded 300 metres between November 2008 and 2009, South Georgia, 2009.

Bryan and Cherry Alexander / Meltwater pouring off iceberg above hole. Scoresbysund Fiord, East Greenland, September 2005.

Bryan and Cherry Alexander / Huge blocks of ice teeter, ready to become icebergs on the glaciated coast. Gerlache Strait, Southern Ocean, Antarctica, October 2009.

Bryan and Cherry Alexander / Icicles hanging from a ledge on an iceberg, Antarctica, October 2006.

Juergen Freund / Hard corals showing bleaching caused by heat stress, West New Britain, Papua New Guinea, May 2010.

Juergen Freund / Clown anemonefish (Amphiprion percula) on bleached coral, Komodo NP, Indonesia, Indo-pacific.

Juergen Freund / Split level of shallow bleaching corals and island, New Ireland, Papua New Guinea, June 2010

Georgette Douwma / Pink anemonefish (Amphiprion perideraion) with anemone showing the effects of bleaching. The bleached anemone is almost white, whereas the unbleached anemone is brown due to the presence of symbiotic...

Georgette Douwma / Bleached coral {Acropora sp} caused by loss of algae with living purple polyps. Maldives.

Bryan and Cherry Alexander / Piece of ice the size of a house crashing into Rype Fiord from Eielson Glacier. Scoresbysund, East Greenland, 2005.

Aflo / N-22304 Slash and Burn. Burning rainforest to clear land for agriculture. Brazil.

David Woodfall / Family with their home threatened by rising sea level, Ganges delta, Bangladesh, July 2008

David Woodfall / Young Bangladeshi with young brother in monsoon rain washing in pond, Ganges delta, Bangladesh, November 2008

David Woodfall / Building a sea wall to combat climate change and protect fishing village from flooding, Sundarbans, Bangladesh, June 2008

David Woodfall / Villagers living in former river bed now dry due to siltation, complex effects of climate change, Ganges delta, Bangladesh, November 2008

Uri Golman / Snow avalanche falling into sea, Jakobshavn, Ilulissat, Kangia, Icefjord, Greenland. October 2008.

Uri Golman / Aerial view of Meltwater lake, Greenland. August 2008.

Andy Rouse / Polar bear (Ursus maritimus) on broken up pack ice, Svalbard, Norway, September 2009

Andy Rouse / Iceberg and broken pack ice, dark clouds overhead, Svalbard, Norway, August 2007

Tom Gilks / Protesters carrying signs / banners "Green jobs won't cost the earth" and "Climate Justice now", part of 'The Wave' climate change march ahead of the Copenhagen climate summit, London, UK, 5th Decemb...

Tom Gilks / Protesters carrying banners including "I vote to stop climagte chaos", part of 'The Wave' climate change march ahead of the Copenhagen climate summit, London, UK, 5th December 2009

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...

David Woodfall / A sea wall being built to protect fishing village from floods, in response to rising sea levels due to climate change, Sundarbans, Bangladesh, June 2008

David Woodfall / A sea wall being built to protect fishing village from floods, in response to rising sea levels due to climate change, Sundarbans, Bangladesh, June 2008

Steven Kazlowski / Polar bear (Ursus maritimus) sow and cub walking on multi-layer ice (freshwater pans formed over the years where the salt is squeezed out of the ice) on the Chukchi Sea, off the National Petroleum Res...

Steven Kazlowski / walrus, Odobenus rosmarus, resting on pack ice during spring breakup, Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Polar bear (Ursus maritimus) sow and cub walking on multi-layer ice (freshwater pans formed over the years where the salt is squeezed out of the ice) on the Chukchi Sea, off the National Petroleum Res...

Steven Kazlowski / Polar bear (Ursus maritimus) sow with cub walking on multi-layer ice (freshwater pans formed over the years where the salt is squeezed out of the ice) on the Chukchi Sea, off the National Petroleum Re...

Steven Kazlowski / Polar bear (Ursus maritimus) sow with cub swimming towards ice on the Chukchi Sea, off the National Petroleum Reserves, Alaska

Sue Flood / Photographer Sue Flood standing next to North Pole sign surrounded by water, on a tourist trip to the North Pole July 2007

Yva Momatiuk & John Eastcott / Gentoo Penguin (Pygoscelis papua) on small ice floe, Gerlache Passage, Antarctica

Niall Benvie / A conceptual picture of Global warming illustrated through a model of the earth with a sign at the North Pole saying "Danger, Thin Ice".

Suzi Eszterhas / Adelie Penguin (Pygoscelis adeliae) standing on iceberg, Paulet Island, Antarctica

Suzi Eszterhas / Adelie Penguin (Pygoscelis adeliae) on edge of iceberg, Paulet Island, Antarctica

Yva Momatiuk & John Eastcott / Massive iceberg floating, smashing into waves and melting rapidly due to gobal warming and rising temperatures of sea and air, near Cumberland Bay, South Georgia Island, Southern Ocean, Antarctic Conv...

Peter Scoones / Bleached {Acropora sp} coral caused by loss of algae due to temperature change. Maldives.

Michael & Patricia Fogden / Costa Rica Brook Frog (Duellmanohyla uranochroa) population numbers have been affected by climate change, Costa Rica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group riding sculpted iceberg, Terre Adelie Land, east Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group riding sculpted iceberg, Terre Adelie Land, east Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group riding sculpted iceberg, Terre Adelie Land, east Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group riding sculpted iceberg, Terre Adelie Land, east Antarctica

Juergen Freund / Skeleton of dead cow propped up in desert. Baja, California, Mexico

Luiz Claudio Marigo / Migrant family from the drought region of NE Brazil

Tony Heald / Animal skull on cracked earth, dry landscape. Namibia.

Gerry Ellis / Whistling Thorn (Acacia drepanolobium) and moon, Amboseli National Park, Kenya

Tui De Roy / Glacier with tourist expedition in inflatable zodiac, southern Greenland Fjords, Greenland

Jim Brandenburg / Polar Bear (Ursus maritimus) walking across ice floes, Ellesmere Island, Nunavut, Canada

Flip Nicklin / Polar Bear (Ursus maritimus) hauling out on ice floe, Wager Bay, Canada

Thomas Mangelsen / Polar Bear (Ursus maritimus) walking on ice at sunset, Churchill, Manitoba, Canada

Thomas Mangelsen / Polar Bear (Ursus maritimus) male on broken ice, Wapusk National Park, Manitoba, Canada

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group on icefloe in Hope Bay, Antarctic Peninsula, Antarctica

Thomas Mangelsen / Polar Bear (Ursus maritimus) cub sitting among spring grasses, Churchill, Manitoba, Canada

Jim Brandenburg / Arctic Wolf (Canis lupus) on ice floe, Ellesmere Island, Nunavut, Canada

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) group crowding on melting summer ice floe, Possession Island, Ross Sea, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) group crowding on melting summer ice floe, Possession Island, Ross Sea, Antarctica

Flip Nicklin / Polar Bear (Ursus maritimus) about to haul out on ice floe, Wager Bay, Canada