TOPSHOT - A Syrian refugee stands at the entrance of the house where he lived at Kucukpazar district near Sultanahmet  during snowfall in Istanbul on January 8, 2017. Heavy snow blanketed Istanbul for a second day on January 8, 2017, resulting in the cancellation of hundreds of flights and more disruption for thousands of travellers. The snowfall was forecast to lessen later in the day but unusually cold temperatures, even for the time of year, well below freezing were expected throughout the week.  / AFP PHOTO / YASIN AKGULYASIN AKGUL/AFP/Getty Images

Yasin Akgul/AFP/Getty

A Syrian refugee stands at the entrance of the house where he lived at Kucukpazar district near Sultanahmet during snowfall in Istanbul. Photo Yasin Akgul/AFP/Getty

Mourners gather around the coffin of former Iranian president Akbar Hashemi Rafsanjani during a mourning ceremony at Jamaran mosque in Tehran, on January 9, 2017. Rafsanjani died in hospital on January 8 after suffering a heart attack. Rafsanjani, who was 82, was a pivotal figure in the foundation of the Islamic republic in 1979, and served as president from 1989 to 1997. / AFP PHOTO / ATTA KENAREATTA KENARE/AFP/Getty Images

Atta Kenare/AFP/Getty

Mourners gather around the coffin of former Iranian president Akbar Hashemi Rafsanjani during a mourning ceremony at Jamaran mosque in Tehran today. Photo Atta Kenare/AFP/Getty

Commuters in Stratford, London travel by bus, as London Underground workers launched a 24-hour strike which will cripple Tube services and cause travel chaos for millions of passengers. PRESS ASSOCIATION Photo. Picture date: Monday January 9, 2017. Members of the Rail, Maritime and Transport union and the Transport Salaried Staffs Association walked out at 6pm yesterday in a long-running dispute over jobs and ticket office closures. See PA story INDUSTRY Tube. Photo credit should read: Stefan Rousseau/PA Wire

Stefan Rousseau/PA

Commuters in Stratford, London travel by bus, as London Underground workers launched a 24-hour strike which crippled Tube services and caused travel chaos for millions of passengers. Photo Stefan Rousseau/PA

Pope Francis

L'Osservatore Romano/Pool Photo via AP

Pope Francis baptizes a baby inside the Sistine Chapel, at the Vatican. Photo L’Osservatore Romano/Pool Photo via AP

Devotees occupy Jones bridge as they take part in the annual procession of the Black Nazarene in metro Manila

Romeo Ranoco/Reuters

Devotees occupy Jones bridge as they take part in the annual procession of the Black Nazarene in metro Manila, Philippines. Photo Romeo Ranoco/Reuters

Models on the catwalk during the Xander Zhou London Fashion Week MenÕs AW17 show held at The Store Studios, Strand, London. PRESS ASSOCIATION Photo. Picture date: Friday January 6, 2017. Photo credit should read: Isabel Infantes/PA Wire

Isabel Infantes/PA

Models on the catwalk during the Xander Zhou show at London Fashion Week held at The Store Studios, Strand, London. Photo Isabel Infantes/PA Wire 

Sumo grand champion Hakuho

AP Photo/Koji Sasahara

Sumo grand champion Hakuho of Mongolia performs his ring entry forms at the Meiji Shrine in Tokyo. The Shinto ritual is part of the annual New Year’s celebrations at the shrine. Photo AP Photo/Koji Sasahara

A drawing of Mary Poppins wearing a pollution mask is suspended in front of the Queen Elizabeth Tower at the Palace of Westminster by Greenpeace campaigners after it was revealed that legal air pollution limits for the whole year have been broken just five days into 2017. PRESS ASSOCIATION Photo. Picture date: Friday January 6, 2017. See PA story ENVIRONMENT Pollution. Photo credit should read: Victoria Jones/PA

Victoria Jones/PA

A drawing of Mary Poppins wearing a pollution mask is suspended in front of the Queen Elizabeth Tower, London, by Greenpeace campaigners after it was revealed that legal air pollution limits for the whole year have been broken just five days into 2017. Photo Victoria Jones/PA

Sofia Yaqub, the mother of Mohammed Yassar Yaqub is comforted at Masjid Bilal Huddersfield where prayers are being held ahead of his funeral. PRESS ASSOCIATION Photo. Picture date: Friday January 6, 2017. Yaqub, 28, died after officers opened fire on the car he was travelling in near the M62 in West Yorkshire on Monday evening. See PA story COURTS Huddersfield. Photo credit should read: Anna Gowthorpe/PA Wire

Anna Gowthorpe/PA

Safia Bano, the mother of Mohammed Yassar Yaqub is comforted at Masjid Bilal Huddersfield where prayers are being held ahead of his funeral. Yaqub, 28, died after officers opened fire on the car he was travelling in near the M62 in West Yorkshire on Monday evening. Photo Anna Gowthorpe/PA

Emirati men walk with their camels across the Liwa desert, some 250 kilometres west of the Gulf emirate of Abu Dhabi, during the Liwa 2017 Moreeb Dune Festival on January 6, 2017.  The festival, which attracts participants from around the Gulf region, includes a variety of races (cars, bikes, falcons, camels and horses) or other activities aimed at promoting the country's folklore. / AFP PHOTO / Karim SahibKARIM

Karim Sahib/AFP/Getty

Emirati men walk with their camels across the Liwa desert, some 250 kilometres west of the Gulf emirate of Abu Dhabi, during the Liwa 2017 Moreeb Dune Festival today.
Photo Karim Sahib/AFP/Getty

Workers gather ducks to be culled in Latrille

Regis Duvignau/Reuters

Workers gather ducks to be culled in Latrille, France, after authorities ordered a massive cull of ducks in three regions most affected by a severe outbreak of bird flu. Photo Regis Duvignau/Reuters

Greek Orthodox swimmer Nicolaos Solis kisses a wooden cross retrieved from the Bosphorus river's Golden Horn, as part of celebrations of the Epiphany day at the Church of Fener Orthodox Patriarchate in Istanbul, on January 6, 2017. Similar celebrations for the Epiphany Day are held across the country and region on river banks, seafronts and lakes.  / AFP PHOTO / OZAN KOSEOZAN KOSE/AFP/Getty Images

Ozan Kose/AFP/Getty

Greek Orthodox swimmer Nicolaos Solis kisses a wooden cross retrieved from the Bosphorus river’s Golden Horn, as part of celebrations of the Epiphany day at the Church of Fener Orthodox Patriarchate in Istanbul today. Photo Ozan Kose/AFP/Getty

Jackie Cobell of Great Britain competes in the women's race in Woehrsee lake on January 6, 2017 in Burghausen, Germany. Swimmers will compete in several disciplines over the next few days and will be exceptionally challenged today as temperatures have plummeted well below zero.  (Photo by Johannes Simon/Bongarts/Getty Images)

Johannes Simon/Bongarts/Getty

Jackie Cobell of Great Britain competes in the women’s race in Woehrsee lake in Burghausen, Germany. Swimmers will compete in several disciplines over the next few days and will be exceptionally challenged today as temperatures have plummeted well below zero. Photo Johannes Simon/Bongarts/Getty

Firemen fight a wildfire near La Adela in La Pampa Province on January 5, 2017. Firefighters in Argentina said on January 5 they were bringing under control three wildfires that have devastated nearly a million hectares (2.5 million acres) of the country's famous pampas, or plains. / AFP PHOTO / Eitan ABRAMOVICHEITAN ABRAMOVICH/AFP/Getty Images

Eitan Abramovicheitan/AFP

Firemen fight a wildfire near La Adela in La Pampa Province. Firefighters in Argentina said on Thursday they were bringing under control three wildfires that have devastated nearly a million hectares of the country’s famous pampas, or plains. Photo Eitan Abramovicheitan/AFP 

Passengers on a London bus cross a bridge at dusk in London, Britain, January 5, 2017. REUTERS/Toby Melville

Toby Melville/Reuters

Passengers on a London bus cross a bridge at dusk in London, Britain. Photo Toby Melville/Reuters 

LONDON, ENGLAND - JANUARY 05:  An Egyptian child's mummy mask from 305-30BC is held up at the Mayfair Antiques and Fine Art Fair on January 5, 2017 in London, England. Running from January 5 to Sunday 8, the fair sees over forty exhibitors with pieces ranging from 1300BC to the present day available for sale.  (Photo by Leon Neal/Getty Images)

Leon Neal/Getty

An Egyptian child’s mummy mask from 305-30BC is held up at the Mayfair Antiques and Fine Art Fair today in London, England. Photo Leon Neal/Getty

Participants wearing Kokoshnik, the Russian traditional headwear, perform during winter swimming festival in the town of Podolsk, south of Moscow, Russia January 5, 2017. REUTERS/Maxim Shemetov

Maxim Shemetov/Reuters

Participants wearing Kokoshnik, the Russian traditional headwear, perform during winter swimming festival in the town of Podolsk, Russia. Photo Maxim Shemetov/Reuters 

Pope Francis arrives for an audience with residents of the areas of central Italy hit by earthquakes, in the Pope Paul IV hall, at the Vatican, Thursday, Jan. 5, 2017. Two strong earthquakes hit central Italy last August and October 2016 causing some 300 victims and leaving thousands homeless. (AP Photo/Andrew Medichini

Andrew Medichini/AP

Pope Francis arrives for an audience with residents of the areas of central Italy hit by earthquakes, in the Pope Paul IV hall, at the Vatican today. Photo Andrew Medichini/AP

Child monks in the Indian Himalayas

Cathal McNaughton/Reuters

Young monks stand at their school inside Thiksey Monastery in Ladakh, India. Photo Cathal McNaughton/Reuters

A swimmer reacts after getting into the ice cold water at Tooting Bec Lido, in south west London on January 5, 2017, at sunrise on a freezing winter morning

Justin Tallis/AFP/Getty

A swimmer reacts after getting into the ice cold water at Tooting Bec Lido, in south west London today at sunrise on a freezing winter morning. Photo Justin Tallis/AFP/Getty