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Pictures of the year: Environment

Volcanic gases rise from the Kilauea lava flow that crossed Pohoiki Road near Highway 132, near Pahoa, Hawaii, May 28, 2018. REUTERS/Marco Garcia

Volcanic gases rise from the Kilauea lava flow that crossed Pohoiki Road near Highway 132, near Pahoa, Hawaii, May 28, 2018. REUTERS/Marco Garcia

Volcanic gases rise from the Kilauea lava flow that crossed Pohoiki Road near Highway 132, near Pahoa, Hawaii, May 28, 2018. REUTERS/Marco Garcia
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A building covered in ice sits at the base of the Horseshoe Falls in Niagara Falls, Canada, January 2, 2018. REUTERS/Aaron Lynett

A building covered in ice sits at the base of the Horseshoe Falls in Niagara Falls, Canada, January 2, 2018. REUTERS/Aaron Lynett

A building covered in ice sits at the base of the Horseshoe Falls in Niagara Falls, Canada, January 2, 2018. REUTERS/Aaron Lynett
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People walk in a field of fireweed, or kochia scoparia, at the Hitachi Seaside Park in Hitachinaka, Japan, October 22, 2018. Fireweed is a grass bush that takes on a bright red color in autumn. REUTERS/Toru Hanai

People walk in a field of fireweed, or kochia scoparia, at the Hitachi Seaside Park in Hitachinaka, Japan, October 22, 2018. Fireweed is a grass bush that takes on a bright red color in autumn. REUTERS/Toru Hanai

People walk in a field of fireweed, or kochia scoparia, at the Hitachi Seaside Park in Hitachinaka, Japan, October 22, 2018. Fireweed is a grass bush that takes on a bright red color in autumn. REUTERS/Toru Hanai
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An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson
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The Villarrica Volcano is seen at night from Pucon town, Chile, September 2, 2018.  REUTERS/Cristobal Saavedra Escobar

The Villarrica Volcano is seen at night from Pucon town, Chile, September 2, 2018. REUTERS/Cristobal Saavedra Escobar

The Villarrica Volcano is seen at night from Pucon town, Chile, September 2, 2018. REUTERS/Cristobal Saavedra Escobar
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A member of the Sri Lankan coast guard is covered in oil as he works to clean an oil spill on a beach in Uswetakeiyawa, Sri Lanka, September 10, 2018. REUTERS/Dinuka Liyanawatte

A member of the Sri Lankan coast guard is covered in oil as he works to clean an oil spill on a beach in Uswetakeiyawa, Sri Lanka, September 10, 2018. REUTERS/Dinuka Liyanawatte

A member of the Sri Lankan coast guard is covered in oil as he works to clean an oil spill on a beach in Uswetakeiyawa, Sri Lanka, September 10, 2018. REUTERS/Dinuka Liyanawatte
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A whirlwind is seen as elephant and zebras walk through the Amboseli National Park, Kenya, August 19, 2018.  REUTERS/Baz Ratner

A whirlwind is seen as elephant and zebras walk through the Amboseli National Park, Kenya, August 19, 2018. REUTERS/Baz Ratner

A whirlwind is seen as elephant and zebras walk through the Amboseli National Park, Kenya, August 19, 2018. REUTERS/Baz Ratner
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A full moon rises past a palm tree in Encinitas, California, October, 24, 2018. REUTERS/Mike Blake

A full moon rises past a palm tree in Encinitas, California, October, 24, 2018. REUTERS/Mike Blake

A full moon rises past a palm tree in Encinitas, California, October, 24, 2018. REUTERS/Mike Blake
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A man walks with his dog through a forest during a foggy morning in Bern, Switzerland, March 4, 2018. REUTERS/Stefan Wermuth

A man walks with his dog through a forest during a foggy morning in Bern, Switzerland, March 4, 2018. REUTERS/Stefan Wermuth

A man walks with his dog through a forest during a foggy morning in Bern, Switzerland, March 4, 2018. REUTERS/Stefan Wermuth
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Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq, November 3, 2018.  REUTERS/Alaa al-Marjani

Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq, November 3, 2018. REUTERS/Alaa al-Marjani

Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq, November 3, 2018. REUTERS/Alaa al-Marjani
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Bioluminescent phytoplankton is seen along the coastal waters at Big Sur, California, February 5, 2018.  
George Krieger/via REUTERS

Bioluminescent phytoplankton is seen along the coastal waters at Big Sur, California, February 5, 2018. George Krieger/via REUTERS

Bioluminescent phytoplankton is seen along the coastal waters at Big Sur, California, February 5, 2018. George Krieger/via REUTERS
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Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volcano in Hawaii, May 13, 2018. REUTERS/Terray Sylvester

Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volcano in Hawaii, May 13, 2018. REUTERS/Terray Sylvester

Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volcano in Hawaii, May 13, 2018. REUTERS/Terray Sylvester
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The Aurora Borealis (Northern Lights) is seen over the sky near Rovaniemi in Lapland, Finland, October 7, 2018.  REUTERS/Alexander Kuznetsov

The Aurora Borealis (Northern Lights) is seen over the sky near Rovaniemi in Lapland, Finland, October 7, 2018. REUTERS/Alexander Kuznetsov

The Aurora Borealis (Northern Lights) is seen over the sky near Rovaniemi in Lapland, Finland, October 7, 2018. REUTERS/Alexander Kuznetsov
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The sun rises as spider webs blanket bushes at the banks of Lake Vistonida, Greece, October 19, 2018. REUTERS/Alexandros Avramidis

The sun rises as spider webs blanket bushes at the banks of Lake Vistonida, Greece, October 19, 2018. REUTERS/Alexandros Avramidis

The sun rises as spider webs blanket bushes at the banks of Lake Vistonida, Greece, October 19, 2018. REUTERS/Alexandros Avramidis
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KV Svalbard's crew, formed by Norwegian Navy privates and scientists from the Norwegian Institute of Marine Research, play soccer as they are protected from polar bears by armed guards in the arctic environment in the sea around Greenland, March 22, 2018.  

Marius Vagenes Villanger/Kystvakten/Sjoforsvaret/NTB Scanpix via REUTERS

KV Svalbard's crew, formed by Norwegian Navy privates and scientists from the Norwegian Institute of Marine Research, play soccer as they are protected from polar bears by armed guards in the arctic environment in the sea around Greenland, March 22,...more

KV Svalbard's crew, formed by Norwegian Navy privates and scientists from the Norwegian Institute of Marine Research, play soccer as they are protected from polar bears by armed guards in the arctic environment in the sea around Greenland, March 22, 2018. Marius Vagenes Villanger/Kystvakten/Sjoforsvaret/NTB Scanpix via REUTERS
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Lightning streaks are seen during a storm over the Auberge de Castille, the office of the Prime Minister Joseph Muscat, in Valletta, Malta, October 19, 2018. REUTERS/Darrin Zammit Lupi

Lightning streaks are seen during a storm over the Auberge de Castille, the office of the Prime Minister Joseph Muscat, in Valletta, Malta, October 19, 2018. REUTERS/Darrin Zammit Lupi

Lightning streaks are seen during a storm over the Auberge de Castille, the office of the Prime Minister Joseph Muscat, in Valletta, Malta, October 19, 2018. REUTERS/Darrin Zammit Lupi
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A woman poses for a picture outside the Ice Cave at the Rhone Glacier in Furka, Switzerland, September 13, 2018. REUTERS/Denis Balibouse

A woman poses for a picture outside the Ice Cave at the Rhone Glacier in Furka, Switzerland, September 13, 2018. REUTERS/Denis Balibouse

A woman poses for a picture outside the Ice Cave at the Rhone Glacier in Furka, Switzerland, September 13, 2018. REUTERS/Denis Balibouse
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A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion, near Athens, Greece, July 27, 2018. REUTERS/Alkis Konstantinidis

A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion, near Athens, Greece, July 27, 2018. REUTERS/Alkis Konstantinidis

A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion, near Athens, Greece, July 27, 2018. REUTERS/Alkis Konstantinidis
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A man uses a torch to walk through a park during cold fog at night in Athboy, Ireland, October 31, 2018. REUTERS/Clodagh Kilcoyne

A man uses a torch to walk through a park during cold fog at night in Athboy, Ireland, October 31, 2018. REUTERS/Clodagh Kilcoyne

A man uses a torch to walk through a park during cold fog at night in Athboy, Ireland, October 31, 2018. REUTERS/Clodagh Kilcoyne
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Damage caused by fire from a burning illegal oil well is seen in Ranto Peureulak, Aceh Province, Indonesia, April 25, 2018. Antara Foto/Rahmad/ via REUTERS

Damage caused by fire from a burning illegal oil well is seen in Ranto Peureulak, Aceh Province, Indonesia, April 25, 2018. Antara Foto/Rahmad/ via REUTERS

Damage caused by fire from a burning illegal oil well is seen in Ranto Peureulak, Aceh Province, Indonesia, April 25, 2018. Antara Foto/Rahmad/ via REUTERS
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A plastic beach volleyball floats in the Strait of Gibraltar, about 6.8 miles (11 km) from the nearest coast, near Barbate, southern Spain, July 31, 2018.  REUTERS/Jon Nazca

A plastic beach volleyball floats in the Strait of Gibraltar, about 6.8 miles (11 km) from the nearest coast, near Barbate, southern Spain, July 31, 2018. REUTERS/Jon Nazca

A plastic beach volleyball floats in the Strait of Gibraltar, about 6.8 miles (11 km) from the nearest coast, near Barbate, southern Spain, July 31, 2018. REUTERS/Jon Nazca
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A young priest throws a snowball during a heavy snowfall in Saint Peter's Square at the Vatican, February 26, 2018. REUTERS/Max Rossi

A young priest throws a snowball during a heavy snowfall in Saint Peter's Square at the Vatican, February 26, 2018. REUTERS/Max Rossi

A young priest throws a snowball during a heavy snowfall in Saint Peter's Square at the Vatican, February 26, 2018. REUTERS/Max Rossi
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Cows drink water from the Lac d'Hongrin during an ongoing drought near Chateau d'Oex, Switzerland, August 7, 2018. REUTERS/Denis Balibouse

Cows drink water from the Lac d'Hongrin during an ongoing drought near Chateau d'Oex, Switzerland, August 7, 2018. REUTERS/Denis Balibouse

Cows drink water from the Lac d'Hongrin during an ongoing drought near Chateau d'Oex, Switzerland, August 7, 2018. REUTERS/Denis Balibouse
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Venders display goods during a sandstorm in Khartoum, Sudan, March 29, 2018. REUTERS/Mohamed Nureldin Abdallah

Venders display goods during a sandstorm in Khartoum, Sudan, March 29, 2018. REUTERS/Mohamed Nureldin Abdallah

Venders display goods during a sandstorm in Khartoum, Sudan, March 29, 2018. REUTERS/Mohamed Nureldin Abdallah
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Farmer Ash Whitney stands in the middle of a dried-up dam in a drought-affected paddock on his property located west of the town of Gunnedah in New South Wales, Australia, June 3, 2018. "I have been here all my life, and this drought is feeling like it will be around a while," said Whitney. REUTERS/David Gray

Farmer Ash Whitney stands in the middle of a dried-up dam in a drought-affected paddock on his property located west of the town of Gunnedah in New South Wales, Australia, June 3, 2018. "I have been here all my life, and this drought is feeling like...more

Farmer Ash Whitney stands in the middle of a dried-up dam in a drought-affected paddock on his property located west of the town of Gunnedah in New South Wales, Australia, June 3, 2018. "I have been here all my life, and this drought is feeling like it will be around a while," said Whitney. REUTERS/David Gray
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A cow is seen on land that used to be under water, at the Aculeo Lagoon in Paine, Chile, May 14, 2018. REUTERS/Matias Delacroix

A cow is seen on land that used to be under water, at the Aculeo Lagoon in Paine, Chile, May 14, 2018. REUTERS/Matias Delacroix

A cow is seen on land that used to be under water, at the Aculeo Lagoon in Paine, Chile, May 14, 2018. REUTERS/Matias Delacroix
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Fields of flowers during the annual blossom in Castelluccio di Norcia near Perugia, Italy, July 12, 2018. REUTERS/Alessandro Bianchi

Fields of flowers during the annual blossom in Castelluccio di Norcia near Perugia, Italy, July 12, 2018. REUTERS/Alessandro Bianchi

Fields of flowers during the annual blossom in Castelluccio di Norcia near Perugia, Italy, July 12, 2018. REUTERS/Alessandro Bianchi
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A man swims as he collects recyclable items in the polluted water of the river Yamuna ahead of World Water Day, in New Delhi, India, March 21, 2018. REUTERS/Adnan Abidi

A man swims as he collects recyclable items in the polluted water of the river Yamuna ahead of World Water Day, in New Delhi, India, March 21, 2018. REUTERS/Adnan Abidi

A man swims as he collects recyclable items in the polluted water of the river Yamuna ahead of World Water Day, in New Delhi, India, March 21, 2018. REUTERS/Adnan Abidi
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Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. REUTERS/David Gray

Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. REUTERS/David Gray

Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. REUTERS/David Gray
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A man takes a picture of heavy fog in Belfast, Northern Ireland, January 10, 2018. REUTERS/Clodagh Kilcoyne

A man takes a picture of heavy fog in Belfast, Northern Ireland, January 10, 2018. REUTERS/Clodagh Kilcoyne

A man takes a picture of heavy fog in Belfast, Northern Ireland, January 10, 2018. REUTERS/Clodagh Kilcoyne
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A woman stands on the footbridge over the river Garry near Pitlochry, Scotland, October 10, 2018. REUTERS/Russell Cheyne

A woman stands on the footbridge over the river Garry near Pitlochry, Scotland, October 10, 2018. REUTERS/Russell Cheyne

A woman stands on the footbridge over the river Garry near Pitlochry, Scotland, October 10, 2018. REUTERS/Russell Cheyne
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Lava flows from the crater of Mount Mayon Volcano during an eruption in Legazpi city, Albay province, south of Manila, Philippines, January 28, 2018. REUTERS/Romeo Ranoco

Lava flows from the crater of Mount Mayon Volcano during an eruption in Legazpi city, Albay province, south of Manila, Philippines, January 28, 2018. REUTERS/Romeo Ranoco

Lava flows from the crater of Mount Mayon Volcano during an eruption in Legazpi city, Albay province, south of Manila, Philippines, January 28, 2018. REUTERS/Romeo Ranoco
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Rows of sunflowers are seen on a cereal intensive farm near Portel, Portugal, August 2, 2018. REUTERS/Rafael Marchante

Rows of sunflowers are seen on a cereal intensive farm near Portel, Portugal, August 2, 2018. REUTERS/Rafael Marchante

Rows of sunflowers are seen on a cereal intensive farm near Portel, Portugal, August 2, 2018. REUTERS/Rafael Marchante
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Israeli scientists participate in an experiment simulating a mission to Mars, at the D-MARS Desert Mars Analog Ramon Station project of Israel's Space Agency, Ministry of Science, near Mitzpe Ramon, Israel, February 18, 2018. REUTERS/Ronen Zvulun

Israeli scientists participate in an experiment simulating a mission to Mars, at the D-MARS Desert Mars Analog Ramon Station project of Israel's Space Agency, Ministry of Science, near Mitzpe Ramon, Israel, February 18, 2018. REUTERS/Ronen Zvulun

Israeli scientists participate in an experiment simulating a mission to Mars, at the D-MARS Desert Mars Analog Ramon Station project of Israel's Space Agency, Ministry of Science, near Mitzpe Ramon, Israel, February 18, 2018. REUTERS/Ronen Zvulun
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A woman walks with a girl along a flooded road during heavy rains in Malwana, Sri Lanka, May 23, 2018. REUTERS/Dinuka Liyanawatte

A woman walks with a girl along a flooded road during heavy rains in Malwana, Sri Lanka, May 23, 2018. REUTERS/Dinuka Liyanawatte

A woman walks with a girl along a flooded road during heavy rains in Malwana, Sri Lanka, May 23, 2018. REUTERS/Dinuka Liyanawatte
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Light illuminates clouds as people watch the sunrise at Haleakala National Park in Hawaii, October 9, 2018. REUTERS/Navesh Chitrakar

Light illuminates clouds as people watch the sunrise at Haleakala National Park in Hawaii, October 9, 2018. REUTERS/Navesh Chitrakar

Light illuminates clouds as people watch the sunrise at Haleakala National Park in Hawaii, October 9, 2018. REUTERS/Navesh Chitrakar
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Boys play in a fountain on a hot summer day in Brussels, Belgium, July 26, 2018. REUTERS/Yves Herman

Boys play in a fountain on a hot summer day in Brussels, Belgium, July 26, 2018. REUTERS/Yves Herman

Boys play in a fountain on a hot summer day in Brussels, Belgium, July 26, 2018. REUTERS/Yves Herman
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A Chinese tourist takes a picture in a lavender field in Valensole, France, July 13, 2018. REUTERS/Eric Gaillard

A Chinese tourist takes a picture in a lavender field in Valensole, France, July 13, 2018. REUTERS/Eric Gaillard

A Chinese tourist takes a picture in a lavender field in Valensole, France, July 13, 2018. REUTERS/Eric Gaillard
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A man walks in front of the India Gate shrouded in smog in New Delhi, India, October 29, 2018. REUTERS/Anushree Fadnavis

A man walks in front of the India Gate shrouded in smog in New Delhi, India, October 29, 2018. REUTERS/Anushree Fadnavis

A man walks in front of the India Gate shrouded in smog in New Delhi, India, October 29, 2018. REUTERS/Anushree Fadnavis
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A sandstorm hits the city of Zhangye in Gansu province, China, November 25, 2018.  REUTERS/Stringer

A sandstorm hits the city of Zhangye in Gansu province, China, November 25, 2018. REUTERS/Stringer

A sandstorm hits the city of Zhangye in Gansu province, China, November 25, 2018. REUTERS/Stringer
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