A woman walks in front of an advertising poster for Magnat LZR 980 by Pininfarina headphones during the IFA Electronics show in Berlin September 4, 2014. (Photo by Hannibal Hanschke/Reuters)

Murals in the Bog Side area of Derry on the 20th anniversary of the IRA ceasefire, on August 31, 2014. (Photo by Niall Carson/PA Wire)

Scandinavian wingwalking duo “Skycats” perform during the “Catwalk” airshow on a Grumman-164A aircraft at the Slovak International Air Fest SIAF 2014 at the Slovak Airforce Base of Sliac on August 30, 2014. (Photo by Joe Klamar/AFP Photo)

A mother and child hide in a bomb shelter in the Petrovskiy district of Donetsk, Ukraine, on September 1, 2014. The Petrovskiy district is currently a frontline and one of the districts which suffered the most from the artillery fights between the Ukrainian army and pro-Russian rebels. (Photo by Mstislav Chernov/Associated Press)

A kite sufer participates in the Guinness World Record attempt for the most kitesurfers sailing together at one time on August 31, 2014 in Tarifa, Spain. 352 participants set a new Guinness World Record, breaking the previous record of 318. (Photo by Sergio Camacho/Getty Images)

Cecil Abella, from Topeka, Kan, takes a self portrait in a sunflower field Monday, September 1, 2014, near Lawrence, Kan. The 40 acre field planted annually by the Grinter family draws bees and lovers of sunflowers alike during the weeklong late summer blossoming of the flowers. (Photo by Charlie Riedel/AP Photo)

Bryce Dalton and his two brothers recently discovered a round hole or crater in the bottom of their irrigation pond on their farmland in Circleville, in Piute County, Utah. So far, they have not found anyone who knows what it is or what causes it to be there. Experts from the Utah Geological Survey took a look and were initially baffled. (Photo by Stuart Johnson/AP Photo/Deseret News)

A boy takes a nap inside a culvert used to prevent flooding, next to a pile of trash along a busy street in Tondo, Manila September 3, 2014. (Photo by Erik De Castro/Reuters)

The latest swimwear fashion is seen in the store at the Munsu water park on August 31, 2014, but visiting journalists were the only people in there. (Photo by Anna Fifield/The Washington Post)

New York Mayor Bill de Blasio, right, and his children, Dante, left, and Chiara, second left, and wife, Chirlane McCray, do the “Smackdown” dance move as they march in the West Indian Day Parade, Monday, September 1, 2014, in the Brooklyn borough of New York. (Photo by Mark Lennihan/AP Photo)

Roman Catholic nuns of the Missionaries of Charity order attend a service to commemorate the 17th death anniversary of Mother Teresa at her tomb at the Missionaries of Charity house in Kolkata on September 5, 2014. Mother Teresa, “Angel of Mercy”, Nobel peace prize winner and Roman Catholic saint-in-waiting died on September 5, 1997 in the eastern city of Kolkata. (Photo by Dibyangshu Sarkar/AFP Photo)

Pakistani protesters help escort their injured colleague to an ambulance during a protest near prime minister's home in Islamabad, Pakistan on Sunday, August 31, 2014. Pakistani police clashed with scattered pockets of anti-government protesters trying to advance on the prime minister's residence after a night of violence that saw hundreds wounded and the first death in more than two weeks of demonstrations. (Photo by Anjum Naveed/AP Photo)

A rainbow appears over Marine One minutes before President Barack Obama landing at Andrews Air Force Base, Md., Monday, September 1, 2014. (Photo by Jose Luis Magana/AP Photo)

Fishermen, firefighters, and Agriculture, Cattle, Rural Development, Fish and Food Secretary personnel collaborate in the cleaning of dead fish in the Cajititlan lake, Tlajomulco town, Mexican state of Jalisco, on 31 August 2014. Close to 50 tons of fishes have died over the last six days from unknown causes, for which the Mexican State Attorney for Environmental Protection (Proepa) triggered an environmental contingency in the area. (Photo by Ulises Ruiz Basurto/EPA)

Local fishermen collect dead “popocha” fish at the lagoon of Cajititlan in Tlajomulco de Zuniga, Jalisco State, Mexico, on September 1, 2014. At least 48 tonnes of fish have turned up dead in a lagoon in western Mexico and authorities are investigating whether a wastewater treatment plant is to blame. (Photo by Hector Guerrero/AFP Photo)

A giant Snoopy balloon is seen as part of a Snoopy exhibition at the entrance of the International Financial Center shopping mall in Shanghai, September 3, 2014. The exhibition, which celebrates a new anniversary of the famous cartoon creation, displays about 2000 toys and will run until end October. (Photo by Aly Song/Reuters)

People dressed in 1940's fashion parade on a US military vehicle in front of Monaco Palace as part of the commemoration of the 70th anniversary of the liberation of Monaco in the second World War, on September 3, 2014 in Monaco. (Photo by Valery Hache/AFP Photo)

A demonstration of a Bell Boeing V-22 Osprey American multi-mission, military, tiltrotor aircraft on the final day of the summit at the Celtic Manor Resort in Newport, south Wales, on September 5, 2014. (Photo by Stefan Rousseau/PA Wire)

Dutch artist Florentijn Hofman's latest creation, a 25 meter (82 feet) white rabbit, leans up against an old aircraft hangar as part of the Taoyuan Land Art Festival in Taoyuan, Taiwan, Tuesday, September 2, 2014. Hofman's big yellow duck drew millions of visitors as it toured the island last year and festival organizers are hoping the rabbit will do the same. The Taoyuan Land Art Festival will take place from September 9-14. (Photo by Wally Santana/AP Photo)

A person stands in front of a 25.3-meter-long giant rabbit designed by Dutch artist Florentijn Hofman at an old aircraft hangar as part of the Taoyuan Land Art Festival in Taoyuan, northern Taiwan, September 3, 2014. The rabbit is named “Moon rabbit” for the coming Mid-Autumn Festival or the Moon Festival and will be displayed from September 4 to 14 at the Taoyuan military base. (Photo by Pichi Chuang/Reuters)

Landscapers trim grass in front of Dutch artist Florentijn Hofman's 25-meter (82-foot) white rabbit, as it leans up against an old aircraft hangar as part of the Taoyuan Land Art Festival in Taoyuan, Taiwan, Tuesday, September 2, 2014. (Photo by Wally Santana/AP Photo)

Dutch artist Florentijn Hofman's latest creation, a 25 meters (82 feets) white rabbit, leans up against an old aircraft hangar as part of the Taoyuan Land Art Festival in Taoyuan, Taiwan, Tuesday, September 2, 2014. (Photo by Wally Santana/AP Photo)

A Syrian man collects vegetables from a vegetable patch locals grew at the site where a barrel bomb hit a sewage pipe in the Baedeen neighbourhood of the northern Syrian city of Aleppo on September 3, 2014. Aleppo province has been subject to a particularly fierce regime aerial campaign, including the use of explosive-packed barrel bombs tossed from regime helicopters that rights groups say kill indiscriminately. (Photo by Zein Al-Rifai/AFP Photo)

A motorist, right, practices Chinese meditation as he waits at a traffic light with thousands commuting on scooters into Taipei, Taiwan, Thursday morning, September 4, 2014. According to 2012 statistics from the Directorate-General of Budget, Accounting and Statistics (DGBAS), nationwide scooter usage last year stood at 48.5 percent, roughly 12 million people. (Photo by Wally Santana/AP Photo)

An Indian policeman holds his weapon while negotiating flood waters in the outskirts of Srinagar on September 4, 2014. Flooding has hit hundreds of villages across the picturesque Kashmir Valley in the country's north, leaving at least 16 people dead, and forcing the closure of schools and some roads, authorities said. (Photo by Tauseef Mustafa/AFP Photo)

A fireball erupts shortly after QEM firefighters, from Grafton, Ill., reached the shore with a burning boat, on August 31, 2014. The pleasure craft was on fire in the Mississippi River half a mile east of Grafton. QEM fire fire officials said the occupants of the boat safely transferred to a pontoon boat nearby when the fire started. (Photo by John Badman/The Telegraph)

Revelers participate in the annual West Indian Day parade in Brooklyn, on September 1, 2014. The parade, which draws a crowd of a million plus, celebrates Caribbean culture. (Photo by Yana Paskova/Getty Images)

Pictures by Brazilian photographer Sebastiao Salgado are seen during the exhibition “Sebastiao Salgado: Genesis” in Brasilia, September 2, 2014. (Photo by Ueslei Marcelino/Reuters)

This photo taken on September 3, 2014 shows Qin Riyang (L) and Leng Yuting, both 26 years old, posing underwater for their wedding pictures at a photo studio in Shanghai, ahead of their wedding next year. Fiance Riyang said they had their wedding photographs taken underwater because “its romantic and beautiful”. Mr Wedding studio owner, Tina Lui, started providing underwater pictures four years ago. (Photo by Johannes Eisele/AFP Photo)

This photo taken on September 3, 2014 shows Leng Yuting, 26, posing underwater for her wedding pictures at a photo studio in Shanghai, ahead of her wedding next year. Her fiance Riyang said they had their wedding photographs taken underwater because 'its romantic and beautiful'. Mr Wedding studio owner, Tina Lui, started providing underwater pictures four years ago. (Photo by Johannes Eisele/AFP Photo)

This photo taken on September 3, 2014 shows Qin Riyang and Leng Yuting, posing underwater for their wedding pictures at a photo studio in Shanghai, ahead of their wedding next year. (Photo by Johannes Eisele/AFP Photo)