Philip Stephen / Silhouette of a supply vessel and oil rig in the North Sea, September 2006

Philip Stephen / The stand-by vessel Grampian Monarch in front of the Bruce oil production platfom, operated by BP, situated in the North Sea 100 miles east of the Shetland Islands, May 2006

Philip Stephen / A rainbow forms behind the Statfjord Bravo production platform in the Norwegian section of the North Sea, September 2007

Philip Stephen / The oil rig J.W McLean flares off gas during drilling operations in the North Sea, September 2006

Philip Stephen / A helicopter and supply vessel next to the oil rig J.W McLean, North Sea, September 2006

Philip Stephen / Silhouette of the Statfjord Bravo production platform in the Norwegian section of the North Sea, September 2007

Philip Stephen / Silhouette of the Statfjord Bravo production platform in the Norwegian section of the North Sea, September 2007

Philip Stephen / The fishing vessel Demares fights through heavy waves in stormy weather in the North Sea near the Beryl oil rig, 160 miles north east of Aberdeen

Philip Stephen / Silhouette of the Statfjord Bravo production platform in the Norwegian section of the North Sea, September 2007

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / walrus, Odobenus rosmarus, herds resting on and swimming around chunks of 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 / Walrus (Odobenus rosmarus) herd swimming in the Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Thermokarst lakes covering the tundra landscape along the Arctic coast in the National Petroleum Reserves, Alaska. These widespread geomorphologial features are formed by the freezing and thawing of A...

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the 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 / Aerial view of the Inupiat village of Barrow during the Spring ice breakup. National Petroleum Reserves, Arctic coast of Alaska

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Thermokarst lakes covering the tundra landscape along the Arctic coast in the National Petroleum Reserves, Alaska. These widespread geomorphologial features are formed by the freezing and thawing of A...

Steven Kazlowski / Aerial view of the Inupiat village of Barrow during the Spring ice breakup. National Petroleum Reserves, Arctic coast of Alaska

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around chunks of pack ice during the 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 / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around a chunk of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Spectacled eider (Somateria fischeri) male in flight over a freshwater lake near Point Barrow, National Petroleum Reserves, Arctic Alaska

Steven Kazlowski / Steller's eider duck (Polysticta stelleri) male along a freshwater lake, National Petroleum Reserves, off Point Barrow, Arctic Alaska

Steven Kazlowski / Steller's eider (Polysticta stelleri) male on tundra in the National Petroleum Reserves, outside Point Barrow, Arctic Alaska

Steven Kazlowski / Two Spectacled eider (Somateria fischeri) males on a freshwater lake off Point Barrow, National Petroleum Reserves, Arctic Alaska

Steven Kazlowski / King eider (Somateria spectabilis) pair on a freshwater lake in the National Petroleum Reserves, off Point Barrow, Arctic Alaska

Steven Kazlowski / Walrus (Odobenus rosmarus) herd resting on and swimming around chunks of pack ice during the spring breakup. Chukchi Sea, off the National Petroleum Reserves, Alaska

Steven Kazlowski / Steller's eider (Polysticta stelleri) male on tundra in the National Petroleum Reserves, outside Point Barrow, Arctic Alaska

Steven Kazlowski / Spectacled eider duck (Somateria fischeri) pair on a freshwater lake off Point Barrow, National Petroleum Reserves, Arctic Alaska

Steven Kazlowski / Spectacled eider (Somateria fischeri) male on a freshwater lake off Point Barrow, National Petroleum Reserves, Arctic Alaska

Steven Kazlowski / Short-billed dowitcher (Limnodromus griseus) on tundra near Point Barrow, National Petroleum Reserves, Arctic Alaska

Steven Kazlowski / Pacific loon (Gavia pacifica) on a freshwater lake in the National Petroleum Reserves, off Point Barrow, Arctic Alaska

Steven Kazlowski / Steller's eider (Polysticta stelleri) male on tundra in the National Petroleum Reserves, outside Point Barrow, Arctic Alaska

Steven Kazlowski / Spectacled eider (Somateria fischeri) male on a freshwater lake off Point Barrow, National Petroleum Reserves, Arctic Alaska

Shattil & Rozinski / Aerial view of Naval Petroleum Reserves, Kern County, California, USA, 2005

Philippe Clement / Pollution from petrochemical industry showing chimneys encompassed with smoke, Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimney and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Philippe Clement / Chimneys and smoke from oil refinery in Antwerp harbour, Belgium

Doug Wechsler / Petroleum refinery, Philadelphia, USA

Doug Wechsler / Petroleum refinery, Philadelphia, USA

TOM WALMSLEY / Gas flare on oil field, Arabian gulf, Arabia

DOMINIC JOHNSON / Dead dragonfly drawn to oil pits by reflection, now floating dead on surface, Siberia

Julia Bayne / Oil rigs at sea Mayard, Trinidad

Martin H Smith / Oil rig with supply ship North Sea

Shattil & Rozinski / Pronghorn antelope grazing near petroleum drill, Red Desert, Wyoming, USA

Martin H Smith / Oil rig with supply ship North Sea

John Cancalosi / Stilbite (hydrated sodium calcium aluminosilicate) a member of zeolite group. Used to separate hydrocarbons in petroleum refining. India

MORLEY READ / Petroleum production station at Shushufindi, Amazonian Ecuador

Gerry Ellis / Petroleum refineries engulfing coastal wetlands, local trap-fishing grounds in the Nile River Delta, Alexandria, Egypt

Martin H Smith / Oil rig North Sea

Pete Oxford / Dead frog in waste oil Amazonia Ecuador

Martin H Smith / Oil rig North Sea

Martin H Smith / Oil rig with supply ships North Sea

Martin H Smith / Oil rig North Sea