Ducks swim on a small arm of Rio Doce (Doce River) after a dam, owned by Vale SA and BHP Billiton Ltd burst, in Governador Valadares, Brazil, November 12, 2015. The collapse of two dams at a Brazilian mine has cut off drinking water for quarter of a million people and saturated waterways downstream with dense orange sediment that could wreck the ecosystem for years to come. Nine people were killed, 19 are still listed as missing and 500 people were displaced from their homes when the dams burst at an iron ore mine in southeastern Brazil on Nov. 5. Scientists say the sediment, which may contain chemicals used by the mine to reduce iron ore impurities, could alter the course of streams as they harden, reduce oxygen levels in the water and diminish the fertility of riverbanks and farmland where floodwater passed. Picture taken November 12, 2015. REUTERS/Ricardo Moraes 

A duck swims on a small arm of Rio Doce (Doce River) after a dam, owned by Vale SA and BHP Billiton Ltd burst, in Governador Valadares, Brazil, November 12, 2015. The collapse of two dams at a Brazilian mine has cut off drinking water for quarter of a million people and saturated waterways downstream with dense orange sediment that could wreck the ecosystem for years to come. Nine people were killed, 19 are still listed as missing and 500 people were displaced from their homes when the dams burst at an iron ore mine in southeastern Brazil on Nov. 5. Scientists say the sediment, which may contain chemicals used by the mine to reduce iron ore impurities, could alter the course of streams as they harden, reduce oxygen levels in the water and diminish the fertility of riverbanks and farmland where floodwater passed. Picture taken November 12, 2015. REUTERS/Ricardo Moraes 

Vadilson Moreira Costa stamds on the balcony of his house on the banks of Rio Doce (Doce River) after a dam, owned by Vale SA and BHP Billiton Ltd burst, in Governador Valadares, Brazil, November 12, 2015. The collapse of two dams at a Brazilian mine has cut off drinking water for quarter of a million people and saturated waterways downstream with dense orange sediment that could wreck the ecosystem for years to come. Nine people were killed, 19 are still listed as missing and 500 people were displaced from their homes when the dams burst at an iron ore mine in southeastern Brazil on Nov. 5. Scientists say the sediment, which may contain chemicals used by the mine to reduce iron ore impurities, could alter the course of streams as they harden, reduce oxygen levels in the water and diminish the fertility of riverbanks and farmland where floodwater passed. Picture taken November 12, 2015. REUTERS/Ricardo Moraes 

Supporters of Congress party celebrate after learning of initial results outside the party office in Ahmedabad, India, November 8, 2015. Prime Minister Narendra Modi suffered a heavy defeat on Sunday in an election in Bihar, India's third most-populous state, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight regional election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. An anti-Modi alliance led by Chief Minister Nitish Kumar was ahead in 179 seats in the 243-seat regional assembly, an overwhelming majority, tallies compiled by the election commission showed. REUTERS/Amit Dave 

A supporter of Janata Dal (United) dances as he celebrates after learning the initial results inside the residence of the party leader Sharad Yadav in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

Supporters of Janata Dal (United) celebrate after learning the initial results inside the residence of the party leader Sharad Yadav in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

Supporters of Janata Dal (United) celebrate after learning the initial results inside the residence of the party leader Sharad Yadav in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

Supporters of Janata Dal (United) celebrate after learning the initial results outside the party office in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

A woman (L) dances as she takes part in celebrations after learning the initial results inside the residence of Janata Dal (United) leader Sharad Yadav (C) in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

Supporters of Janata Dal (United) celebrate after learning the initial results outside the party office in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

Supporters of Congress party celebrate after learning the initial results outside the party headquarters in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

A girl dances as she takes part in celebrations after learning the initial results inside the residence of Janata Dal (United) leader Sharad Yadav in New Delhi, India, November 8, 2015. Prime Minister Narendra Modi was heading for a heavy defeat on Sunday in a key election in India's third most populous state Bihar, signalling the waning power of a leader who until recently had an unrivalled reputation as a vote winner. Modi's second straight state election setback will galvanise opposition parties, embolden rivals in his own party and diminish his standing with foreign leaders amid concern he may not win a second term as prime minister. REUTERS/Anindito Mukherjee 

A pilgrim returning from his Haj in Saudi Arabia looks on at the General Aviation Terminal of the Abuja Airport, Nigeria September 29, 2015. The haj, the world's largest annual gathering of people, has been the scene of stampedes, fires and riots in the past, but their frequency had diminished in recent years as Saudi Arabia's authorities spent billions of dollars to improve safety. Picture taken September 29, 2015. REUTERS/Afolabi Sotunde 

Pilgrims returning from their Haj in Saudi Arabia look on at the General Aviation Terminal of the Abuja Airport, Nigeria September 29, 2015. The haj, the world's largest annual gathering of people, has been the scene of stampedes, fires and riots in the past, but their frequency had diminished in recent years as Saudi Arabia's authorities spent billions of dollars to improve safety. Picture taken September 29, 2015. REUTERS/ Afolabi Sotunde 

A pilgrim returning from his Haj in Saudi Arabia looks on at the General Aviation Terminal of the Abuja Airport, Nigeria September 29, 2015. The haj, the world's largest annual gathering of people, has been the scene of stampedes, fires and riots in the past, but their frequency had diminished in recent years as Saudi Arabia's authorities spent billions of dollars to improve safety. Picture taken September 29, 2015. REUTERS/Afolabi Sotunde 

Ronald Cook, holds a photograph of him and his 20-year-old grandson Devin Cook, who was killed last year, at his home in Baltimore, Maryland July 24, 2015. Murders in the city have increased by a third so far this year, and as another summer of deaths progresses, the families of last year's victims wait for closure. But they don't expect much. Only about 45 percent of homicides last year were solved, and Baltimore remains a deeply divided city where forgotten neighborhoods are grasp for diminishing resources. To match Feature USA-BALTIMORE/DEATH Picture taken July 24, 2015. REUTERS/Carlos Barria

Ronald Cook, holds a photograph of him and his 20-year-old grandson Devin Cook, who was killed last year, at his home in Baltimore, Maryland July 24, 2015. Murders in the city have increased by a third so far this year, and as another summer of deaths progresses, the families of last year's victims wait for closure. But they don't expect much. Only about 45 percent of homicides last year were solved, and Baltimore remains a deeply divided city where forgotten neighborhoods are grasp for diminishing resources. To match Feature USA-BALTIMORE/DEATH Picture taken July 24, 2015. REUTERS/Carlos Barria

An aerial view shows sea walls on the beach that protect sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau TPX IMAGES OF THE DAY

A view shows a damaged sand dune due to the erosion on the Atlantic Ocean coastline in Montalivet, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau TPX IMAGES OF THE DAY

A view shows clouds from a weather front above the sea along the Atlantic Ocean coast in Royan, southwestern France, February 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 18, 2015. REUTERS/Regis Duvignau 

The Hourtin beach is protected with sand walls to prevent erosion of the Atlantic coast, Southwestern France, June 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 18, 2015. REUTERS/Regis Duvignau 

An aerial view shows sea walls on the beach that protect sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau 

An aerial view shows a sea wall on the beach that protects sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau 

A view shows a damaged sand dune from erosion of the Atlantic Ocean coastline in Montalivet, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

A man runs from waves which break on a beach front at high tide in Biarritz, southwestern France, February 22, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 22, 2015. REUTERS/Regis Duvignau

An aerial view shows sea walls on the beach that protect sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau 

A view shows sea walls on the beach in front of damaged sand dunes due to the erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

An aerial view shows the block of flats called "Le Signal", which was closed after heavy erosion caused by storms last winter on the Atlantic Ocean coast, in Soulac, southwestern France, June 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 18, 2015 REUTERS/Regis Duvignau 

A view shows a damaged sand dune from the erosion of the Atlantic Ocean coastline in Montalivet, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

An aerial view shows a sea wall on the beach that protect sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau 

A view shows a sea wall on the beach in front of damaged sand dunes due to erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

Backhoes remove sand to create a dune to protect the Atlantic coast against erosion during a winter storm, near the Casino on the beach in Biarritz, southwestern France, February 22, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 22, 2015. REUTERS/Regis Duvignau

People walk on the beach in front of a damaged house where the sand dune along the Atlantic Ocean coast line has been eroded in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

A view shows the Biarritz beach, sand dune, and the promenade near the Casino during a winter storm on the Atlantic coast, southwestern France, February 22, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 22, 2015. REUTERS/Regis Duvignau

A view shows a damaged sand dune due to the erosion on the Atlantic Ocean coastline in Montalivet, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

A view shows sea walls on the beach in front of damaged sand dunes from erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

An aerial view shows sea walls on the beach that protect sand dunes from erosion along the Atlantic Ocean coast in Anglet, southwestern France, June 20, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 20, 2015. REUTERS/Regis Duvignau 

A view shows sea walls on the beach front to protect damaged sand dunes due to the erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

An aerial view shows the block of flats called "Le Signal", which was closed after heavy erosion caused by storms last winter on the Atlantic Ocean coast, in Soulac, southwestern France, June 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 18, 2015 REUTERS/Regis Duvignau 

The Hourtin beach is protected with sand walls to prevent erosion of the Atlantic coast, Southwestern France, June 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 18, 2015. REUTERS/Regis Duvignau 

The Hourtin beach is protected with sand walls to prevent erosion of the Atlantic coast, Southwestern France, June 18, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken June 18, 2015. REUTERS/Regis Duvignau 

A man walks on the beach near sea walls installed in front of damaged sand dunes from erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

A backhoe removes sand to create a dune to protect the Atlantic coast against erosion during a winter storm, near the Casino on the beach in Biarritz, southwestern France, February 22, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 22, 2015. REUTERS/Regis Duvignau

A view shows sea walls on the beach in front of damaged sand dunes due to the erosion along the Atlantic Ocean coast in Soulac, southwestern France, February 19, 2015. France's Atlantic Ocean coastline, with its picturesque beaches, sandy between the Gironde estuary and the Adour River, and rocky in the Basque Country, diminishes several meters every year. Erosion from recent winter storms, with huge waves and unusual high tides, have threatened buildings and private homes on the coast, with a reduction of the beachfront by 10 meters in certain areas, the Aquitaine Coast Observatory said. Paris will host the World Climate Summit, called the COP21, from November 30 to December 11, 2015. Picture taken February 19, 2015. REUTERS/Regis Duvignau 

A car space that was sold at auction earlier this month for A$120,000 (US$92,000), can be seen in the inner-Sydney suburb of Kirribilli, Australia June 23, 2015. Australian house prices have risen for the 10th straight quarter led by another outsized gain in Sydney, adding to concerns about an overheating market and diminishing affordability in the city. REUTERS/David Gray 

A car space (front) that was sold at auction earlier this month for A$120,000 (US$92,000), can be seen in the inner-Sydney suburb of Kirribilli, Australia June 23, 2015. Australian house prices have risen for the 10th straight quarter led by another outsized gain in Sydney, adding to concerns about an overheating market and diminishing affordability in the city. REUTERS/David Gray 

A car space (front) that was sold at auction earlier this month for A$120,000 (US$92,000), can be seen in the inner-Sydney suburb of Kirribilli, Australia June 23, 2015. Australian house prices have risen for the 10th straight quarter led by another outsized gain in Sydney, adding to concerns about an overheating market and diminishing affordability in the city. REUTERS/David Gray 

A soldier stands next to a monument where the remains of Spanish writer Miguel de Cervantes, the author of "Don Quixote" and considered the father of the modern novel, lie in Madrid, Spain, June 11, 2015. Plaque reads "Here rests Miguel de Cervantes Saavedra 1547-1616 "Time is brief, anxieties grow, hopes diminish and, with this, I carry out my life with my desire to live" The trials of Persiles and Segismunda Royal Academy of the Spanish language Year 2015". REUTERS/Andrea Comas

Madrid mayor Ana Botella (3rd R) unveils a monument where the remains of Spanish writer Miguel de Cervantes, the author of "Don Quixote" and considered the father of the modern novel, lie in Madrid, Spain, June 11, 2015. Plaque reads "Here rests Miguel de Cervantes Saavedra 1547-1616 "Time is brief, anxieties grow, hopes diminish and, with this, I carry out my life with my desire to live" The trials of Persiles and Segismunda Royal Academy of the Spanish language Year 2015". REUTERS/Andrea Comas

Soldiers stand next to a monument where the remains of Spanish writer Miguel de Cervantes, the author of "Don Quixote" and considered the father of the modern novel, lie in Madrid, Spain, June 11, 2015. Plaque reads "Here rests Miguel de Cervantes Saavedra 1547-1616 "Time is brief, anxieties grow, hopes diminish and, with this, I carry out my life with my desire to live" The trials of Persiles and Segismunda Royal Academy of the Spanish language Year 2015". REUTERS/Andrea Comas

Madrid mayor Ana Botella speaks in front of a monument with the remains of Spanish writer Miguel de Cervantes, the author of "Don Quixote" and considered the father of the modern novel, lie in Madrid, Spain, June 11, 2015. Plaque reads "Here rests Miguel de Cervantes Saavedra 1547-1616 "Time is brief, anxieties grow, hopes diminish and, with this, I carry out my life with my desire to live" The trials of Persiles and Segismunda Royal Academy of the Spanish language Year 2015". REUTERS/Andrea Comas

Vicary of Religious Life of Madrid's archbishopric Joaquin Martin Abad speaks in front of a monument with the remains of Spanish writer Miguel de Cervantes, the author of "Don Quixote" and considered the father of the modern novel, lie in Madrid, Spain, June 11, 2015. Plaque reads "Here rests Miguel de Cervantes Saavedra 1547-1616 "Time is brief, anxieties grow, hopes diminish and, with this, I carry out my life with my desire to live" The trials of Persiles and Segismunda Royal Academy of the Spanish language Year 2015". REUTERS/Andrea Comas

Anti-Houthi protesters demonstrate in Sanaa February 18, 2015. The banner (R) reads: "The Houthi coup will diminish and the people's peaceful revolutions will succeed." REUTERS/Khaled Abdullah (YEMEN - Tags: CIVIL UNREST POLITICS) 

Women take part in an anti-Houthi demonstration in Sanaa February 18, 2015. The banner (R) reads: "The Houthi coup will diminish and the people's peaceful revolutions will succeed." REUTERS/Khaled Abdullah (YEMEN - Tags: CIVIL UNREST POLITICS) 

Ukraininan President Petro Poroshenko (L) looks back, followed by Belarussian President Alexander Lukashenko and Russian President Vladimir Putin (R) after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Grigory Dukor (BELARUS - Tags: POLITICS TPX IMAGES OF THE DAY)

French President Francois Hollande, German Chancellor Angela Merkel and Ukraininan President Petro Poroshenko (L-R) walk after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Grigory Dukor (BELARUS - Tags: POLITICS)

Russian President Vladimir Putin, French President Francois Hollande, Ukraininan President Petro Poroshenko, German Chancellor Angela Merkel and Belarussian President Alexander Lukashenko (L-R) walk after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Valentyn Ogirenko (BELARUS - Tags: POLITICS)

French President Francois Hollande and Russian President Vladimir Putin (R) walk after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Grigory Dukor (BELARUS - Tags: POLITICS)

Russian President Vladimir Putin, French President Francois Hollande, Ukraininan President Petro Poroshenko (covered), German Chancellor Angela Merkel and Belarussian President Alexander Lukashenko (L-R) walk after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Valentyn Ogirenko (BELARUS - Tags: POLITICS)

German Chancellor Angela Merkel walks with French President Francois Hollande (covered), Ukraininan President Petro Poroshenko, followed by Belarussian President Alexander Lukashenko and Russian President Vladimir Putin (L-R) after a meeting in Minsk, February 11, 2015. The leaders of France, Germany, Russia and Ukraine were due to attend a peace summit on Wednesday, but Ukraine's pro-Moscow separatists diminished the chance of a deal by launching some of the war's worst fighting in an assault on a government garrison. REUTERS/Grigory Dukor (BELARUS - Tags: POLITICS)