Firefighters battle a fire at a warehouse on January 3, 2015 in Harbin, China. A warehouse in Harbin suddenly collapsed at about 10 p.m. on Friday after nine hours of burning, killing three firefighters and injuring 14 others. (Photo by ChinaFotoPress/Getty Images)

Firefighters salute and cry as they mourn for fellow firefighters, who were killed after a building collapsed during a fire, in Harbin, Heilongjiang province January 3, 2015. Five firefighters were killed and 14 others, mostly firefighters, injured as a ceramics market warehouse, which was part of a 11-storey residential building, collapsed due to a fire. The fire was under control on Saturday morning after 20 hours of battle, state television reported. (Photo by Reuters/China Daily)

A sign with the face of Russian President Vladimir Putin, reading “Entrance forbidden to Putin's supporters”, is seen on the door of Smal Ukraine restaurant in Gdynia, December 31, 2014. (Photo by Dominik Sadowski/Reuters/Agencja Gazeta)

Michael Hayboeck from Austria soars through the air during the training for the third jumping of the 63rd four-hills Ski jumping tournament in Innsbruck, January 3, 2015. The prestigious four-hills tournament will end in Bischofshofen on January 6. (Photo by Dominic Ebenbichler/Reuters)

A man is silhouetted against the setting sun as he races a pair of buffaloes while participating in Kambala, an annual buffalo race conducted to mark the end of the harvest season at Surathkal town on the outskirts of the southern Indian city of Mangalore January 3, 2015. (Photo by Abhishek Chinnappa/Reuters)

A man races a pair of buffaloes as he participates in Kambala, an annual buffalo race conducted to mark the end of the harvest season at Surathkal town on the outskirts of the southern Indian city of Mangalore January 3, 2015. (Photo by Abhishek Chinnappa/Reuters)

A boy distributes refreshments during a celebration marking the birthday anniversary of Prophet Mohammed in Sidon, south Lebanon January 3, 2015. (Photo by Ali Hashisho/Reuters)

A participant runs towards the waters of the North Sea during the annual New Year's swim event in Ostend, Belgium January 3, 2015. The temperature of the water was eight degrees Celsius (46.4 degrees Fahrenheit). (Photo by Francois Lenoir/Reuters)

Participants covered in colored powder celebrate after running the Color Manila Run in Taguig City, metro Manila January 4, 2015. Hundreds of runners joined the annual event, which aims to promote a healthier lifestyle. (Photo by Romeo Ranoco/Reuters)

Police women march during the Grand Military Review Parade ceremony to mark the 67th Myanmar Independence Day in Naypyitaw January 4, 2015. (Photo by Soe Zeya Tun/Reuters)

A U.S. soldier from the 3rd Cavalry Regiment pays his respects during a memorial for Specialist Wyatt Martin and Sergeant First Class Ramon Morris at Bagram Air Field in the Parwan province of Afghanistan December 23, 2014. Specialist Martin and Sergeant First Class Ramon were killed on December 12th by an improvised explosive device while on patrol near Bagram Air Field. (Photo by Lucas Jackson/Reuters)

Employees of a Las Cascadas shopping mall evacuate after a fire broke out inside, in Antiguo Cuscatlan January 3, 2015. The fire partially destroyed the Las Cascadas shopping mall and 12 people were treated for smoke inhalation. According to local media, firefighters, emergency personnel and policemen worked to control the fire for three hours. (Photo by Jose Cabezas/Reuters)

Smoke rises from the Norman Atlantic multi-deck car-and-truck ferry docked at Brindisi harbour, after a fire broke out on it off the coast of Greece January 3, 2015. Tug boats hauled the burnt-out hulk of the ferry that caught fire on Sunday off the coast of Greece into a southern Italian port on Friday, opening the way for an investigation into the cause of the blaze that killed at least 11 people. (Photo by Ciro De Luca/Reuters)

Indonesian police stand near a Beriev Be-200 amphibious plane carrying equipment for Russian rescue teams searching for AirAsia QZ8501 at the airbase in Pangkalan Bun, Central Kalimantan January 4, 2015. A multinational team searching for a crashed AirAsia passenger jet found another large underwater object believed to be part of the plane, but persistent bad weather hampered efforts on Sunday to locate its black box recorders and recover bodies of victims. (Photo by Darren Whiteside/Reuters)

An Indian army soldier crosses a road with a wall clock which was temporary fixed at the side of a road to monitor parade timing, after the rehearsal for the Republic Day parade in Kolkata January 4, 2015. India will celebrate its annual Republic Day on January 26. (Photo by Rupak De Chowdhuri/Reuters)

Finalists wait backstage before their performances during the annual European Elvis Tribute Artist Contest and Convention in Birmingham, central England January 4, 2015. (Photo by Darren Staples/Reuters)

People ride in a Polski Fiat vehicle in downtown Havana January 4, 2015. Picture taken January 4, 2015. (Photo by Alexandre Meneghini/Reuters)

Members of the Shi'ite Muslim Houthi movement stand outside a building belonging to the movement after a blast, in Sanaa January 5, 2015. A large blast damaged a building belonging to Yemen's Shi'ite Muslim Houthi militia in a western district of the capital Sanaa early on Monday, but there were no fatalities, a police source and witnesses said. (Photo by Khaled Abdullah/Reuters)

A woman stands inside her damaged house near a building of the Shi'ite Muslim Houthi movement hit by a blast in Sanaa January 5, 2015. (Photo by Khaled Abdullah/Reuters)

A decoration of a cat is pictured hanging above a cleaner working at the lobby of a shopping mall in Beijing, January 5, 2015. (Photo by Jason Lee/Reuters)

People pass by a sculpture promoting Chinese liquor in Beijing, January 5, 2015. (Photo by Jason Lee/Reuters)

An investor looks at a computer screen showing stock information at a brokerage house in Hefei, Anhui province January 5, 2015. China stocks surged to their highest close in five years on Monday, led upward by property and energy shares. (Photo by Reuters/Stringer)

A jogger takes an early morning run in central London January 5, 2015. (Photo by Eddie Keogh/Reuters)

Karolina Pliskova of the Czech Republic reacts as she wins her first round women's singles match against Victoria Azarenka of Belarus at the Brisbane International tennis tournament in Brisbane January 5, 2015. (Photo by Jason Reed/Reuters)

A woman takes her souvenir picture with a white fox in front of ice sculptures illuminated by coloured lights during the opening day of the 31st Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, January 5, 2015. The annual Ice and Snow Festival, organized by China National Tourism Administration and local governments, kicked off on Monday in Harbin, one of the coldest cities in China. (Photo by Kim Kyung-Hoon/Reuters)

People ride slides on ice sculptures illuminated by coloured lights during the opening day of the 31st Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, January 5, 2015. (Photo by Kim Kyung-Hoon/Reuters)

A woman rides horse-shaped ice sculpture iduring the opening day of the 31st Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, January 5, 2015. (Photo by Kim Kyung-Hoon/Reuters)

People tour between the large-scale ice sculpture fish at the Ice and Snow World in Harbin city, Heilongjiang province, China, 05 January 2015. The 31th Harbin International Ice and Snow Festival kicks off on 05 January that will last about three months. (Photo by EPA/Stringer)

A girl reacts as she is asked not to step on the table as she chooses games during the distribution of donated toys to low income families at a church in Madrid January 5, 2015. Traditionally, children in Spain receive their presents delivered by the Three Wise Men on the morning of January 6 during the Christian holiday of the Epiphany. (Photo by Susana Vera/Reuters)

Ukrainian servicemen sit atop armoured personnel carriers (APC) during a ceremony to hand over weapons, military equipment and aircrafts to the army at a firing range outside Zhytomyr January 5, 2015. (Photo by Valentyn Ogirenko/Reuters)

Men dressed as the Three Kings sit on camels during the Three Kings procession at Hradcanske Square, as part of a re-enactment of the Nativity scene, in Prague January 5, 2015. (Photo by David W. Cerny/Reuters)

The dismantled Solar Impulse 2 aircraft is pictured before being loaded into a Cargolux Boeing 747 cargo aircraft at Payerne airport, Switzerland January 5, 2015. The Solar Impulse 2 aircraft and its team relocates to Abu Dhabi from where an attempt to fly around the world in stages using only solar energy will be made from March 2015. The aircraft, weighing 2.4 tons with a wingspan of 72 meters, is fitted with more than 17,000 solar cells. (Photo by Denis Balibouse/Reuters)

Solar Impulse crew members load a piece of the wing of the experimental aircraft “Solar Impulse 2” (HB-SIB) into a Boeing 747 cargo plane at the airbase in Payerne, Switzerland, 05 January 2015. A Boeing 747 plane will take off early 06 January carrying the experimental aircraft Solar Impulse to Abu Dhabi in the United Arab Emirates. The main goal of the Solar Impulse project is to circumnavigate the world, in March 2015 from Abu Dhabi, with the solar powered aircraft with a wingspan of 72 metres, powered only by solar energy. (Photo by Laurent Gillieron/EPA)

An element of a wing of the dismantled Solar Impulse 2 aircraft is loaded into a Cargolux Boeing 747 cargo aircraft at Payerne airport January 5, 2015. (Photo by Denis Balibouse/Reuters)