Tibetan exiles scuffle with police during a protest outside the venue of a meeting between China's President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. (Photo by Adnan Abidi/Reuters)

A Tibetan exile is detained by police during a protest outside the venue of a meeting between Chinese President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. (Photo by Anindito Mukherjee/Reuters)

A Tibetan exile scuffles with police during a protest outside the venue of a meeting between China's President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. Groups of Tibetan activists held noisy protests outside the hotel where Xi was staying in New Delhi, and at the stately Hyderabad House where he sat down for formal talks with Modi. (Photo by Adnan Abidi/Reuters)

Tibetan exiles are detained by police during a protest outside the venue of a meeting between Chinese President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. (Photo by Adnan Abidi/Reuters)

A man looks at a Twizy, the Renault electric city car, during a presentation of the Wattmobile, a new self-drive Autolib-style electric car service at Gare de l'Est train station in Paris September 18, 2014. Wattmobile and SNCF railways offer Renault electric cars and Peugeot e-Vivacity electric scooters rentals from Paris, Marseille, Lyon and Lille train stations. The network will grow to 20 train stations in France by the end of the year. (Photo by Charles Platiau/Reuters)

A woman and a girl walk along the beach covered in debris after Hurrican Odile hit the area, in Acapulco September 18, 2014. Thousands of tourists were stranded in the storm-battered Mexican Pacific resort of Los Cabos on Thursday, with water in short supply and looted stores sitting empty as a new hurricane threatened to buffet the popular tourist hub. Odile churned into the southern tip of the Baja California peninsula on Sunday as a Category 3 hurricane, wreaking havoc on a scenic area popular with U.S sun seekers that has rarely witnessed such devastation. (Photo by Claudio Vargas/Reuters)

Students in military uniforms balance bottles of water on their heads as they practice goose-stepping marching during a military training session at a college in Zhengzhou, Henan province September 17, 2014. (Photo by Reuters/Stringer)

NASA's DHC-3 Otter plane flies in Operation IceBridge-Alaska surveys of mountain glaciers in Alaska in this image released on September 18, 2014. Over the past few decades, average global temperatures have been on the rise, and this warming is happening two to three times faster in the Arctic. As the region's summer comes to a close, NASA is hard at work studying how rising temperatures are affecting the Arctic. The Arctic Radiation – IceBridge Sea and Ice Experiment, or ARISE, is a new NASA airborne campaign to collect data on thinning sea ice and measure cloud and atmospheric properties in the Arctic. The campaign was designed to address questions about the relationship between retreating sea ice and the Arctic climate. (Photo by Chris Larsen/Reuters/NASA/University of Alaska-Fairbanks)

An art installation by Brazilian artist Eduardo Srur is seen on the Cidade Jardim bridge next to the Pinheiros river, one of the two waterways that flow through the middle of Sao Paulo September 18, 2014. The art installation was created by Srur to urge people not to pollute rivers. (Photo by Nacho Doce/Reuters)

An art installation by Brazilian artist Eduardo Srur shows a life-size mannequin standing over the highly polluted Pinheiros River in Sao Paulo, Brazi, on September 18, 2014. (Photo by Andre Penner/AP Photo)

An art installation by Brazilian artist Eduardo Srur made with a life-size mannequin stands on a bridge over the highly polluted Pinheiros River in Sao Paulo, Brazil, Thursday, September 18, 2014. Srur says his work aims to warn people about the pollution in the city's rivers. (Photo by Andre Penner/AP Photo)

Dejected supporters from the “Yes” Campaign walk through George Square in Glasgow, Scotland September 19, 2014. Scotland's First Minister Alec Salmond conceded defeat on Friday over his bid to win independence and demanded the British government rapidly meet its promise of more powers for Edinburgh. (Photo by Paul Hackett/Reuters)

Liang Yanguo, 51, naps as he lies on a rope tied between two trees, as a form of martial arts practice, at a park in Huangyan district of Taizhou, Zhejiang province September 18, 2014. Liang was training in martial arts and free combat until he was diagnosed with late stage throat cancer three years ago. After having surgery, he invented the rope method as a more relaxed way to continue practicing martial arts and keep his body healthy, local media reported. (Photo by William Hong/Reuters)

Soldiers wait for a tow truck with their stalled military rescue vehicle along a flooded road as tropical storm Fung-Wong battered the Philippine capital Manila September 19, 2014. Heavy rain in the Philippine capital, Manila, caused flooding in many areas on Friday, shutting schools, government offices and financial markets as a tropical storm made landfall to the north. Thousands of residents in low-lying areas were moved to higher ground, officials said, as flood waters rose quickly after the equivalent of half a month's usual rain fell in six hours. (Photo by Erik De Castro/Reuters)

An Atlantique 2 maritime patrol aircraft is seen on the tarmac at Al-Dhafra airbase September 18, 2014 in this handout image today by ECPAD. France said on Friday its jets had launched strikes inside Iraq for the first time since the country promised to join military action against Islamic State insurgents who have taken over parts of the country. Picture taken September 18, 2014. (Photo by J. Brunet/Reuters/ECPAD/Armee de l'Air)

Students of a dance academy perform as part on an earthquake evacuation drill in Mexico City September 19, 2014. The drill was part of events marking the 29th anniversary of the1985 Mexico City earthquake that killed at least 10,000, local media reported. (Photo by Tomas Bravo/Reuters)

U.S. President Barack Obama makes remarks at the DNC's annual Women's Leadership Forum at the Marriott Marquis Hotel in Washington, September 19, 2014. (Photo by Larry Downing/Reuters)

A police horse rears up as pro-union protestors clash with pro-independence protestors during a demonstration at George Square in Glasgow, Scotland September 19, 2014. Scotland spurned independence in a historic referendum on Thursday, saving a union dating back over 300 years but ushering in a period of intense bargaining over Britain's Prime Minister David Cameron's pre-vote pledges to give Scots more say over their own affairs. (Photo by Cathal McNaughton/Reuters)

South Korea's Gu Seul and Kim Ka-young swim to the pool's edge after performing in the women's duet technical routine synchronised swimming competition at Munhak Park Tae-hwan Aquatics Center during the 17th Asian Games in Incheon September 20, 2014. (Photo by Tim Wimborne/Reuters)

A priest blesses the body of a victim who drowned in floodwaters a day after tropical storm Fung-Wong inundated the Philippine capital Manila September 20, 2014. Heavy rain in the Philippine capital, Manila, caused flooding in many areas on Friday, shutting schools, government offices and financial markets as a tropical storm made landfall to the north. Thousands of residents in low-lying areas were moved to higher ground, officials said, as flood waters rose quickly after the equivalent of half a month's usual rain fell in six hours. (Photo by Erik De Castro/Reuters)

Thailand's Princess Sirivannavari Nariratana riding Prince Charming Wpa performs during the equestrian Dressage Team competition at the Dream Park Equestrian Venue during the 17th Asian Games in Incheon September 20, 2014. (Photo by Kim Hong-Ji/Reuters)

The 2014 Ig Nobel Prize trophy is hoisted high during a performance at the Ig Nobel Prize ceremony at Harvard University, in Cambridge, Mass., Thursday, September 18, 2014. The Ig Nobel prize is an award handed out by the Annals of Improbable Research magazine for silly sounding scientific discoveries that often have surprisingly practical applications. (Photo by Charles Krupa/AP Photo)

“Yes” campaigners and “No” supporters hold signs as former Prime Minister Gordon Brown leaves a rally in Glasgow, Scotland, on September 16, 2014. (Photo by Peter Macdiarmid/Getty Images)

A Filipino holds a duck outside his house as a swollen river slowly recedes in suburban Quezon city, Philippines Monday, September 15, 2014. Fast-moving typhoon Kalmaegi blew out of the northern Philippines Monday after causing flash floods and landslides. Three people died when big waves and strong winds sank a stalled ferry over the weekend. (Photo by Aaron Favila/AP Photo)

A Red Cross burial team remove the body of a suspected Ebola victim from a home in Monrovia, Liberia, on September 17, 2014. The World Bank warned Wednesday that the Ebola outbreak could deal the economies of Liberia, Guinea and Sierra Leone a catastrophic blow, as the fear of contagion causes work, trade and transportation to grind to a halt. (Photo by Daniel Berehulak/The New York Times)

A Ukrainian military vehicle damaged by an unexploded rocket shell is seen at the site of recent shelling near the village of Dmytrivka in eastern Ukraine, September 19, 2014. (Photo by David Mdzinarishvili/Reuters)

A visitor watches a photo of Associated Press photographer Anja Niedringhaus at the Leica exhibition hall during the photo fair Photokina in Cologne, Germany, Thursday, September 18, 2014. Niedringhaus was killed by an Afghan policeman in Afghanistan last April. (Photo by Martin Meissner/AP Photo)

A U.S. Secret Service agent with an automatic rifle hurries people to evacuate the White House complex over a security alert moments after President Barack Obama and his family left for the presidential retreat, Camp David, in Maryland, September 19, 2014. (Photo by Larry Downing/Reuters)

Vietnam's Nguyen Thi Quyen (R) strikes the ball as Malaysia's Khamis Kamisah defends during the Women's Double's Sepaktakraw match at the Bucheon Gymnasium during the 17th Asian Games in Incheon September 20, 2014. (Photo by Olivia Harris/Reuters)

Fans of U.S. singer Miley Cyrus pose for a photograph before Cyrus' concert at the Arena Ciudad de Mexico in Mexico City, September 19, 2014. (Photo by Bernardo Montoya/Reuters)

A tomato is about to hit two women taking a selfie during a tomato fight in front of the Royal Palace turning Amsterdam's central Dam square into a red pulpy mess Sunday, September 14, 2014. Entrepreneurs have seized upon Russia's boycott of European produce to set up a tomato-throwing fight. The idea is lifted from Spain's famed annual “La Tomatina” festival. The Dutch event is being marketed as a protest, but participants say they're mostly looking forward to smacking friends and strangers with overripe tomatoes. Wearing goggles is strongly advised. (Photo by Peter Dejong/AP Photo)

Astronaut Reid Wiseman captured this image of Florida to Louisiana just before dawn, taken from the International Space Station on Sept. 12 and distributed by NASA on September 17, 2014. (Photo by Reid Wiseman/NASA)

Dhobis, or washermen, wash clothes on the banks of the River Gomti in Lucknow, India, Wednesday, September 17, 2014. Dhobis are traditional laundry workers who wash clothes by hand and dry them in the sun, an occupation which has been in existence for generations. (Photo by Rajesh Kumar Singh/AP Photo)