The “EMIEW3” robot (R) demonstrates communicating with a visitor during a press preview in Tokyo on April 8, 2016. Japanese electronics giant Hitachi unveiled its humanoid customer service and guidance robot “EMIEW3” and “remote brain” robotics IT platform. (Photo by Toshifumi Kitamura/AFP Photo)





This image provided by Bigelow Aerospace on April 6, 2016 shows an illustration of the Bigelow Expandable Activity Module (BEAM), center right, attached to the International Space Station. It's a technology demonstration meant to pave the way for moon bases and Mars expeditions, as well as orbiting outposts catering to scientists and tourists. (Photo by Bigelow Aerospace via AP Photo)





Malia Obama walks off of Marine One with her father President Barack Obama as they head to Air Force One at Andrews Air Force Base in Md., Thursday, April 7, 2016. The Obama's are traveling to Chicago where President Obama will speak at the University of Chicago Law School. (Photo by Susan Walsh/AP Photo)





University of Texas students embrace during a gathering for fellow student Haruka Weiser on campus, Thursday, April 7, 2016, in Austin, Texas. Weiser, a first-year theater and dance student from Oregon, was found dead on campus after she was reporter missing earlier this week. (Photo by Eric Gay/AP Photo)





Swiss Guards at attention during a private audience of Pope Francis and Croatian Prime Minister Tihomir Oreskovic at the Vatican, 07 April 2016. (Photo by Alessandro di Meo/EPA)





Migrants woman Kais Khalaf, 25, from Syria, carries her-7 old month daughter out of a train wagon at the border crossing at the northern Greek border point of Idomeni, Greece, Thursday, April 7, 2016. Migrants and refugees stranded in Idomeni, find shelter in train ‘sleeping cars’, with about 11,000 migrants remaining stuck in Idomeni, most of them for over a month, not knowing how to deal with the shut European borders. (Photo by Amel Emric/AP Photo)





Bangladeshi students protest seeking arrest of three motorcycle-riding assailants who hacked student activist Nazimuddin Samad to death as he walked with a friend, in Dhaka, Bangladesh, Thursday, April 7, 2016. Police suspect 28-year-old Samad was targeted for his outspoken atheism in the Muslim majority country and for supporting a 2013 movement demanding capital punishment for war crimes involving the country's independence war against Pakistan in 1971, according to Dhaka Metropolitan Police Assistant Commissioner Nurul Amin. (Photo by AP Photo)





Herdsman grazes sheep at a meadow with blooming almond flowers at Alae Village in Gongliu County, northwest China's Xinjiang Uygur Autonomous Region, April 5, 2016. (Photo by Shen Qiao/Xinhua/Barcroft Media)





Protesters march against Peruvian presidential candidate Keiko Fujimori in downtown Lima, Peru, April 5, 2016. (Photo by Mariana Bazo/Reuters)





Protesters representing corruption perform during a march against Peruvian presidential candidate Keiko Fujimori in downtown Lima, Peru, April 5, 2016. (Photo by Guadalupe Pardo/Reuters)





A man bathes as a woman washes her clothes at municipal taps along railway tracks at a yard in Ahmedabad, India, April 6, 2016. (Photo by Amit Dave/Reuters)





A Pakistani migrant threatens to hang himself from a utility pole during a demonstration inside the Moria registration centre on the Greek island of Lesbos, April 6, 2016. (Photo by Giorgos Moutafis/Reuters)





Supporters of a a strike by junior doctors hold placards during a protest outside the Department of Health in London, Britain April 6, 2016. (Photo by Stefan Wermuth/Reuters)





A pole dancer dressed as a deer and activists playing hunters perform in a protest against canned hunting in Vienna, Austria, April 6, 2016. (Photo by Heinz-Peter Bader/Reuters)





A soldier carries mock weaponry for training during the visit of German Defence Minister Ursula von der Leyen (unseen) to the EUTM military training mission in Koulikoro, Mali, April 6, 2016. (Photo by Michael Kappeler/Reuters)





A seal bearing the inscription “Revere Heaven and Serve thy People”, carved for the Kangxi Emperor, is displayed by Sotheby's Asia Deputy Chairman Nicholas Chow at a preview in Hong Kong, China in this March 14, 2016 file photo. The seal, described by Sotheby's as “the most important Chinese historical object ever offered at an auction”, goes under the hammer for $11.8 million on April 6, 2016. (Photo by Bobby Yip/Reuters)





A man stands inside a monument at the historical town of Baraqish in Yemen's al-Jawf province after it was taken over by pro-government forces from Houthi fighters April 6, 2016. (Photo by Ali Owidha/Reuters)





Ugo Dumont, a volunteer for the Genworth R70i Aging Experience, participates in a demonstration at the Liberty Science Center in Jersey City, New Jersey, April 5, 2016. (Photo by Shannon Stapleton/Reuters)





A man walks past a poster depicting Russian President Vladimir Putin and reading “Which Panama?” at a bus stop in Moscow, Russia, April 6, 2016. In Russian “panama” also means a bucket hat. (Photo by Sergei Karpukhin/Reuters)





A helicopter makes a drop on a fire which broke out in Arizona and spread into California, sparking the evacuation of two recreational vehicle parks near the Havasu National Wildlife Refuge in California in this April 6, 2016 handout photo provided by San Bernardino County Fire Department via Twitter. (Photo by Reuters/San Bernardino County Fire Department via Twitter)





A Mapuche Indian activist is detained by riot policemen during a rally in Santiago, Chile, April 6, 2016. The demonstrators say they are demanding justice for indigenous Mapuche inmates as well as respect for their indigenous rights and land for their communities. (Photo by Ivan Alvarado/Reuters)





A paramilitary policeman attends a training session in Nanning, Guangxi Zhuang Autonomous Region, China, April 6, 2016. (Photo by Reuters/China Daily)





Red flag covers a soldier from Chinese honour guards during a welcoming ceremony for Sri Lankan Prime Minister Ranil Wickremesinghe (not in picture) at the Great Hall of the People in Beijing, China, April 7, 2016. (Photo by Jason Lee/Reuters)





Viconte Du Noyer ridden by jockey Jonathan Burke in the Betfred Red Rum Handicap Chase during the Grand Opening Day of the Crabbie's Grand National Festival at Aintree Racecourse, Liverpool on April 7, 2016. (Photo by Mike Egerton/PA Wire)





Horse Racing, Crabbie's Grand National Festival, Aintree Racecourse on April 7, 2016: Racegoers arrive for the first day. (Photo by Andrew Yates/Reuters/Livepic)





Horse Racing, Crabbie's Grand National Festival, Aintree Racecourse on April 7, 2016: General view of a racegoer having a drink. (Photo by Jason Cairnduff/Reuters/Action Images/Livepic)





Horse Racing, Crabbie's Grand National Festival, Aintree Racecourse on April 7, 2016: Racegoers before the races. (Photo by Jason Cairnduff/Reuters/Action Images/Livepic)





A counsellor and a recently rescued child (L) watch another child play with a mask at a state-run rehabilitation centre in Jakarta, Indonesia April 4, 2016. Authorities in the sprawling Indonesian capital are cracking down on the exploitation of children after a raft of cases, from child labour to violence and sexual assault, was uncovered in recent weeks. (Photo by Darren Whiteside/Reuters)





A snake charmer carries his monkey on his shoulder while he waits for customers, in Colombo, Sri Lanka April 7, 2016. (Photo by Dinuka Liyanawatte/Reuters)





A woman stands in front of the border fence after migrants and refugees tried to open it at a makeshift camp at the Greek-Macedonian border near the village of Idomeni, Greece, April 7, 2016. (Photo by Marko Djurica/Reuters)





A woman sits with her child after migrants and refugees tried to open the border fence at a makeshift camp at the Greek-Macedonian border near the village of Idomeni, Greece, April 7, 2016. (Photo by Marko Djurica/Reuters)





A boy walks in a compound for the collection of used plastic bottles in Yemen's capital Sanaa, April 7, 2016. (Photo by Mohamed al-Sayaghi/Reuters)





A rag-picker rests on sacks filled with used containers in Yemen's capital Sanaa, April 7, 2016. (Photo by Mohamed al-Sayaghi/Reuters)





Turkmen brides and grooms, who are displaced and have fled the violence in the province of Nineveh, arrive to attend a mass wedding ceremony in Kirkuk, Iraq, April 7, 2016. (Photo by Ako Rasheed/Reuters)





Motivational speaker Spencer West, who had both of his legs amputated when he was five years old due to a genetic disorder, speaks during We Day California in Inglewood, California, April 7, 2016. (Photo by Danny Moloshok/Reuters)





Children play on the street in Nagorno-Karabakh's city of Stepanakert, April 7, 2016. (Photo by Reuters/Staff)





Ethnic Armenian soldiers stand next to a cannon at artillery positions near the Nagorno-Karabakh's town of Martuni, April 7, 2016. (Photo by Reuters/Staff)





A tourist (2nd L) poses with two people dressed as Hulk and Iron Man, as another dressed as Woody from Toy Story takes their photo in Times Square, in New York, April 7, 2016. The assortment of costumed characters, painted naked women and ticket sellers who make the streets of New York's Times Square their office, catering to tourists, may soon be restricted after a City Council vote Thursday. (Photo by Rickey Rogers/Reuters)





A girl takes part in an English manners and etiquette training course in Shanghai, China on April 7, 2016. The programme offers children of wealthy Chinese families the opportunity to learn about English style and etiquette. (Photo by Rex Features/Shutterstock)





A Bedouin girl sits on a TV set saved from her damaged home after an Israeli bulldozer had demolished the house of the Dahouk family in the Bedouin community of Khan Al Ahmar, in the West Bank east of Jerusalem, 07 April 2016. Israeli authorities justified the demolishing by claiming that the homes have been illegally built on Israeli natural reserves land. (Photo by Atef Safadi/EPA)





The spine of a sperm whale is pulled out of a container by taxidermists Ralf Blakey (L) and Stefan Streit (R), and trainee Jennifer Hennemann at the Institute for Veterinary Medicine at Justus Liebieg University in Giessen, Germany, 07 April 2016. The skeleton of the whale was stored for three months in a water bath so that the rest of the flesh and tissue could dissolve for preservation. The whale is one of a dozen that died in January in the North Sea. (Photo by Arne Dedert/EPA)





Kemachart has a complex design drawn on his face at Wat Supan Rangsri on April 05, 2016 in Mae Sariang, Thailand. Han, 10, and Kemachart, 11, are neighbors in Chiang Mai's ethnic Tai Yai (Shan) community who have travelled to Mae Sariang near the Burmese border for the Poy Sang Long ordination ceremony where their family roots and traditional culture remain strong. Poy Sang Long is a Buddhist novice ordination ceremony of the Shan people or Tai Yai, an ethnic group of Shan State in Myanmar and northern Thailand. Young boys aged between 7 and 14 are ordained as novices to learn the Buddhist doctrines. (Photo by Taylor Weidman/Getty Images)





A nove monk has his picture taken by a make up artist at Wat Supan Rangsri on April 05, 2016 in Mae Sariang, Thailand. (Photo by Taylor Weidman/Getty Images)





A Palestinian baby sits in his crib outside his family house, after Israeli army tractors destroyed structures at a Bedouin camp in Khirbat Tana, near the Bait Furik village, east of the Palestinian city of Nablus, on April 7, 2016. (Photo by Jaafar Ashtiyeh/AFP Photo)





A handout picture taken on April 7, 2016 and obtained from the Russian Defence Ministry's official website on April 8, 2016, reportedly shows a Russian army sapper working in the ancient Syrian city of Palmyra. (Photo by AFP Photo/Russian Defence Ministry)





Banks-Caddell Elementary School second grader, Oscar Martinez, takes a close look at a chameleon at the Wetlands Edge Environmental Center in Decatur, Ala., Wednesday, April 6, 2016. (Photo by John Godbey/The Decatur Daily via AP Photo)





In this handout image provided by British Airways, Supermodel David Gandy takes part in an impromptu British Airways heritage fashion show on the streets of Hong Kong wearing a 1920s Imperial Airways sheepskin pilot jacket to mark the 80th Anniversary of British Airways flights to Hong Kong on April 7, 2016 in Hong Kong. (Photo by British Airways via Getty Images)





Kashmiri Muslims try to get the glimpse of the body of Waseem Malla, a suspected militant of Hizbul Mujahideen, during his funeral procession in Pehlipora, some 60 kilometers (35 miles) south of Srinagar, Indian controlled Kashmir, Thursday, April 7, 2016. Anti-India protesters attacked government forces with rocks and burned an armored vehicle Thursday as they participated in the funerals of two insurgents killed in a gunbattle in the disputed Kashmir region, an Indian official said. (Photo by Dar Yasin/AP Photo)





Russian Orthodox Church Patriarch Kirill, center, releases birds at Annunciation Cathedral in the Moscow's Kremlin in Moscow, Russia, Thursday, April 7, 2016, to mark the Russian Orthodox holiday of the Annunciation. (Photo by Alexander Zemlianichenko/AP Photo)





Jason Dufner indicates that he found his ball in the azaleas on the 13th hole during the first round of the Masters golf tournament Thursday, April 7, 2016, in Augusta, Ga. (Photo by David J. Phillip/AP Photo)