Two U.S. helicopters land at The Hague airport March 24, 2014. U.S. President Barack Obama is in the Netherlands, where he will be attending the Nuclear Security Summit. (Photo by Michiel Wijnbergh/Reuters)

A woman, face smeared with colored powder, smiles during a religious spring festival Holi in Kuala Lumpur, Malaysia, Sunday, March 23, 2014. Holi, the Hindu festival of colors, is celebrated by people throwing colored powder and water at each other. (Photo by AP Photo)

U.S. first lady Michelle Obama practices tai chi with students at Chengdu No.7 High School in Chengdu in southwest China's Sichuan province Tuesday, March 25, 2014. (Photo by Andy Wong/AP Photo)

First Lady Michelle Obama gestures as she watches students practice Taichi at Chengdu No. 7 High School during her visit in Chengdu, China. (Photo by Petar Kujundzic/Reuters)

Pakistani brides talk as they attend a mass-wedding ceremony in Karachi on late March 24, 2014. Some 115 couples participated in the mass-wedding ceremony organised by a local charity welfare trust. (Photo by Asif Hassan/AFP Photo)

A Balinese woman dances while in a state of trance during Melasti Ceremony at a beach on March 28, 2014 in Badung, Bali, Indonesia.The Melasti ritual is held annually ahead of the Nyepi Day of Silence, a ceremony intended to cleanse and purify the souls of the Balinese Hindu participants. Nyepi is a Hindu celebration observed every new year according to the Balinese calendar. The national holiday is one of self-reflection and meditation and activities such as working, watching television or travelling are restricted between the hours of 6 a.m. and 6 p.m. (Photo by Agung Parameswara/Getty Images)

A woman cries while in a state of trance during the Melasti Ceremony at a beach in Badung, Bali, Indonesia, on March 28, 2014. (Photo by Agung Parameswara/Getty Images)

Producer Hesheng Tai of China poses in a installation created in a special 3D-technique during a press preview in the exhibition “You Are The Art” (“Du bist die Kunst”) by a Chinese artist group at Augustusburg castle in Augustusburg, Germany, Friday, March 21, 2014. Visitors are invited to take pictures of themselves interacting with the art and to share the results on social networks. The exhibition includes 23 paintings and lasts from March 22, 2014 to June 22, 2014. (Photo by Jens Meyer/AP Photo)

A young woman enjoy sunny day on Ipanema Beach, the South Zone of Rio de Janeiro on the morning of Wednesday, March 24, 2014. (Photo by Marcelo Fonseca/Estadão Conteúdo)

Leading UK beatboxer, Jason Singh, has vocally recreated the nation's best-known songbirds as part of the National Trust's campaign to celebrate the sounds of spring and encourage the nation to get outdoors and experience nature first hand, on March 23, 2014. (Photo by Andy Fallon/The National Trust)

A car sits rolled over in the wake of Friday nights March 28, 2014 earthquake on Carbon Canyon Road in Brea, Calif., near Olinda Village. (Photo by Rod Veal/AP Photo/The Orange County Register)

Participants, headed by the group Pracha Nat, commemorated the event by performing a program called 'Journey to the Red' Black night of 25 March 1971 anniversary, Dhaka, Bangladesh – 25 Mar 2014 On the 25 th March 1971, the Pakistani military launched Operation Searchlight, killing thousands. The Pakistan army attacked the halls at Dhaka University killing the several thousand unarmed Bengalis. The operation was ordered by the central government of West Pakistan. (Photo by Zakir Hossain Chowdhury/Rex Features)

Greenpeace activists dramatise a protest against US consumer goods giant Procter & Gamble outside a building housing the P&G office in Jakarta on March 26, 2014. Environmental group Greenpeace accused US consumer goods giant Procter & Gamble of responsibility for the destruction of Indonesian rainforests and the habitat of endangered orangutans and tigers. (Photo by Bay Ismoyo/AFP Photo)

A Chinese man uses an old film camera to take a picture of relatives near the Forbidden City on March 27, 2014 in Beijing, China. (Photo by Kevin Frayer/Getty Images)

Nawal Farhat, 62-year-old, poses in her home at the El'Arafa necropolis, a cemetery located in the City of the Dead, in Cairo March 25, 2014. People live and work amongst the dead in the 4-mile-long cemetery, which consists of tombs and mausoleums. While some reside in the area to be closer to their ancient heritage, others were forced to reside here from central Cairo due to increased urbanization since the 1950s, or for work opportunities. The poorest live in a slum area in the City of the Dead. (Photo by Amr Abdallah Dalsh/Reuters)

A member of People for the Ethical Treatment of Animals (PETA) Asia, covered in body paint to resemble a “bloody” Air France logo and holding a sign that reads, “Air France: Stop Cruelty to Monkeys”, stands in streets of the financial district on Thursday, March 27, 2014 in Singapore. She was doing this as a plea for the lives of animals outside Air France's office in Singapore, to protest the company's policy of shipping primates to laboratories where they were killed for animal testing. (Photo by Wong Maye-E/AP Photo)

People walk in front of a giant pair of sunglasses installed in central Rome on March 23, 2014. (Photo by Gabriel Bouys/AFP Photo)

A visitor looks at products in a stand during the “Erotika Fair” in Sao Paulo, Brazil, on March 28, 2014. The event, the biggest of its kind in Latin America, offers visitors attractions such as workshops, erotic interactive games, striptease shows, erotic accessories and products. (Photo by Nelson Almeida/AFP Photo)

Visitors walk under the umbrellas symbolizing the earth's environment and peace along Cheonggye stream in Seoul, South Korea, Thursday, March 27, 2014. (Photo by Lee Jin-man/AP Photo)

Towed 155mm Howitzers fire during an artillery drill in Inje, near the demilitarized zone (DMZ) which separates the two Koreas, in this picture provided by South Korean Army and released by Yonhap on March 27, 2014. South Korea's military on Thursday seized a North Korean fishing boat that it said had crossed a disputed maritime border after ignoring warnings to retreat amid growing tension between the two sides. The incident comes as the North faces renewed pressure from the international community after it fired two mid-range missiles on Wednesday just as the leaders of South Korea, Japan and the United States pledged to curb its nuclear arms ambitions. (Photo by Reuters/South Korean Army/Yonhap)

A newly discovered planet-like object, dubbed “Sedna” is seen in this artist's concept released by NASA March 26, 2014. Astronomers have found a small icy body far beyond Pluto and the Kuiper Belt, a discovery that calls into question exactly what was going on during the early days of the solar system. The diminutive world, provisionally called 2012 VP113 by the international Minor Planet Center, is estimated to be about 450 kilometers (280 miles) in diameter – one-eighth the width of the moon and less than half the size of a neighboring dwarf planet named Sedna, which was discovered a decade ago. By comparison, Earth is about 12,700 kilometers (7,900 miles) across. Unlike red and shiny Sedna, the newfound object is pinker and much fainter, which made it hard to detect. Its pink tinge comes from ice, methane and carbon dioxide that have been damaged by radiation. Sedna and VP are the first objects found in a region of the solar system that previously was believed to be devoid of planetary bodies. The no man’s land extends from the outer edge of the Kuiper Belt, home to the dwarf planet Pluto and more than 1,000 other small icy bodies, to the Oort cloud, which orbits the sun some 10,000 times farther away than Earth’s average of 150 million kilometers (93 million miles). The inner Oort cloud is where some comets such as the sun-diving Comet ISON are thought to originate. ISON broke apart late last year after brushing too close to the sun. (Photo by Reuters/NASA/JPL-Caltech)

An Afghan special forces soldier gestures after his unit took over control of an election office after the Taliban launched an assault with a suicide bomber detonating his vehicle outside an election office in Kabul, Afghanistan, Tuesday, March 25, 2014. Gunmen stormed into the building, trapping dozens of employees inside and killing many people. A candidate for a seat on a provincial council was among those killed, along with an election worker, a civilian and a policeman. (Photo by Anja Niedringhaus/AP Photo)

A woman bathes as a Navy Special Forces marine patrols in Buenaventura, Colombia’s main port city on the Pacific coast, Friday, March 28, 2014. The government deployed additional security forces to Buenaventura to try to control escalating violence between criminal gangs fighting for control of the city, which is a gateway for cocaine shipments. (Photo by Fernando Vergara/AP Photo)

Two Chinese Ilyushin IL-76s aircraft sit on the tarmac at RAAF Pearce base ready to join the search missing Malaysia Airlines flight MH370 in Perth, Australia, Saturday, March 22, 2014. (Photo by Rob Griffith/AP Photo)

A womn wearing a coat reading “Bomb” stands in front of policemen during a protest by anti-nuclear activists under the slogan: “Stop nuclear power! Abolish Poverty!” on the eve of the Nuclear Security Summit in The Hague, The Netherlands, on March 23, 2014. World leaders are expected to pledge to beef up the fight against nuclear terror with the UN atomic watchdog playing a central role, a draft statement ahead of a two-day summit in The Hague showed. The draft statement from early this year and seen by AFP, gives an indication on plans to safeguard atomic material with leaders from more than 50 countries meeting at the Nuclear Security Summit on Monday and Tuesday. (Photo by Martijn Beekman/AFP Photo/ANP)

Runners participate in Warrior Dash, World's Largest Obstacle Race Series on March 22, 2014 in Smithville, Texas. (Photo by Rick Kern/Getty Images for Warrior Dash)

Women from Bunia in eastern Democratic Republic of Congo walk within the Kyangwali refugee settlement in Hoima district in Western Uganda, on March 24, 2014. (Photo by Edward Echwalu/Reuters)

A crew member steps off a Royal Australian Air Force AP-3C Orion upon its return from a search for the missing Malaysia Airlines flight MH370 over the Indian Ocean, at the Royal Australian Air Force base Pearce in Perth, Monday, March 24, 2014. Satellite images released by Australia and China had earlier identified possible debris in an area that may be linked to the disappearance of the flight on March 8 with 239 people aboard. (Photo by Jason Reed/AP Photo)

Kermit the Frog and Miss Piggy arrive in a black taxi at the celebrity screening of Muppets Most Wanted at the Curzon Mayfair in central London, on March 24, 2014. (Photo by Justin Tallis/PA Wire)

A photo made available on 25 March 2014 shows Xia, a 38-year-old kebab vendor who is dressed and looks like North Korean leader Kim Jong Un, working at his food stall in Shenyang, in northeast China's Liaoning province, on 24 March 2014. Xia's resemblance to the North Korean ruler has brought him so much business that he had to hire a helper as he is often occupied with customers taking selfies along with him. (Photo by Wei Jun/EPA)