This combination of August 30, 2005 and July 29, 2015 aerial photos shows downtown New Orleans and the Superdome flooded by Hurricane Katrina and the same area a decade later. Katrina's powerful winds and driving rain bore down on Louisiana on August 29, 2005. The storm caused major damage to the Gulf Coast from Texas to central Florida while powering a storm surge that breached the system of levees that were built to protect New Orleans from flooding. (Photo by David J. Phillip/Gerald Herbert/AP Photo)

A group of people wearing full solid-coloured bodysuits walk along a promenade as they take part in a street art performance in Bat Yam, near Tel Aviv, Israel August 29, 2015. Some 40 people participated on Saturday in the performance, initiated by a group of artists called Prizma Ensemble, as part of the city's annual international street art and street theatre festival. The group says the performance deals with concepts of identity and movement in public spaces. (Photo by Amir Cohen/Reuters)

A store staff walks past other staffs dressed up as Stormtrooper and Death Star Gunner (R) from the film “Star Wars” before launching the film's new toys at Loft Variety Store in Shibuya shopping district in Tokyo, September 3, 2015. New “Star Wars” toys and other merchandise were released in stores across Japan just after midnight local time during a global rollout of the popular products. (Photo by Toru Hanai/Reuters)

In this photo provided by the RSPCA/Australian Capital Territory, an overgrown sheep found in Australian scrubland is prepared to be shorn in Canberra, Australia, Thursday, September 3, 2015. The wild, castrated merino ram named Chris, yielded 40 kilograms (89 pounds) of wool – the equivalent of 30 sweaters – and sheded almost half his body weight. (Photo by RSPCA ACTvia AP Photo)

Israeli fashion design student from the Shenkar College of Engineering and Design Danit Peleg (R) assists a fashion blogger to wear an outfit from her graduate collection during a conference on 3-D printing in Tel Aviv, Israel September 3, 2015. Peleg, 27, says she spent over 2000 hours to create her graduate collection which is made solely from home 3-D printers. International fashion bloggers, taking part in a project supported by “Stand With Us Israel fellowship”, a non-profit organisation, attended the conference and tried on Peleg's clothing before listening to her talk about her collection. (Photo by Nir Elias/Reuters)

In this Tuesday, July 14, 2015, photo, Phoe Thaw, center, a member of the White New Blood lethwei fighters club, a Myanmar traditional martial-arts club which practices a rough form of kickboxing, stretches during a practice session in their gym on a street in Oakalarpa, north of Yangon, Myanmar. Three of the club's members competed this summer on a stage a world away from the street gym: a mixed-martial-arts “One Championship” event broadcast globally on cable television networks, where fighters could receive $1,000 for each fight, according to coach Myint Zaw who started the traditional fighters' club 15 years ago. (Photo by Gemunu Amarasinghe/AP Photo)

Tiharu Ram, 70, a follower of Ramnami Samaj, who has tattooed the name of the Hindu god Ram on his face, poses for a picture outside his house in the village of Chandlidi, in the eastern state of Chhattisgarh, India, November 16, 2015. Denied entry to temples and forced to use separate wells, low-caste Hindus in the eastern state of Chhattisgarh first tattooed their bodies and faces more than 100 years ago as an act of defiance and devotion. (Photo by Adnan Abidi/Reuters)

A worker makes auto parts on a machine inside a workshop in Faridabad, India, December 24, 2015. Car makers such as Maruti Suzuki India and Hyundai Motor see huge growth in India, set to become the world's third-largest auto market by 2020 as millions buy their first new car. Price tags can be as low as $3,000 for a new Tata Motors Nano mini-car. India is also becoming a low-cost export hub for global car makers such as General Motors and Ford Motor. As the sector expands, some of the work is sub-contracted out to small factories operating on paper-thin margins, where poor contract workers often have little or no access to safety equipment or health benefits. (Photo by Adnan Abidi/Reuters)