Framed photographs of seven crew members are displayed at a memorial service held by an association of Ethiopian airline pilots, in Addis Ababa, Ethiopia Monday, March 11, 2019. Authorities in Ethiopia, China and Indonesia grounded all Boeing 737 Max 8 aircraft Monday following the crash of an Ethiopian Airlines jetliner that killed 157 people, and investigators found the flight recorders from the field where the plane went down. (Photo by Samuel Habtab/AP Photo)





Mourners attend a memorial service held by an association of Ethiopian airline pilots, at which framed photographs of seven crew members were on display, in Addis Ababa, Ethiopia Monday, March 11, 2019. (Photo by Samuel Habtab/AP Photo)





View of damaged caused by torrential rains in a street of Sao Paulo, Brazil, on March 11, 2019. Floods caused by torrential rains in and around Brazil's financial hub Sao Paulo killed seven people overnight, firefighters said Monday. (Photo by Miguel Schincariol/AFP Photo)





View in Caracas on March 10, 2019, during the third day of a massive power outage which has left the capital and much of the country without communications, water and electricity. The unprecedented power outage already left 15 patients dead and threatens to extend indefinitely, increasing distress for the severe political and economic crisis hitting the oil-rich South American nation. (Photo by Matias Delacroix/AFP Photo)





People collect water from a leaking pipeline above the Guaire River during rolling blackouts, which affects the water pumps in people's homes, offices and stores, in Caracas, Venezuela, Monday, March 11, 2019. The blackout has intensified the toxic political climate, with opposition leader Juan Guaido blaming alleged government corruption and mismanagement and President Nicolas Maduro accusing his U.S.-backed adversary of sabotaging the national grid. (Photo by Fernando Llano/AP Photo)





Vietnamese Doan Thi Huong, who is on trial for the killing of Kim Jong Nam, the estranged half-brother of North Korea's leader, arrives at the Shah Alam High Court on the outskirts of Kuala Lumpur, Malaysia March 11, 2019. (Photo by Lai Seng Sin/Reuters)





Britain's Prince William (rear-R) and Catherine, Duchess of Cambridge (front-R) talk to children as they leave a Commonwealth service at Westminster Abbey in London, Britain, 11 March 2019. The Commonwealth represents a global network of 53 countries and almost 2.4 billion people, a third of the world’s population, of whom 60 percent are under 30 years old. (Photo by Facundo Arrizabalaga/EPA/EFE)





A man feeds food to dogs during the “Brexit Dogs Dinner” protest outside the Houses of Parliament in London, Britain, March 10, 2019. (Photo by Henry Nicholls /Reuters)





Lee Spencer, a 49-year-old former British marine, known as “The Rowing Marine”, holds a red flare and his prosthesis as he arrives in Cayenne, French Guiana, early on March 11, 2019, after smashing solo Atlantic rowing record from mainland Europe to South America. - Spencer originally embarked in Portimao, Portugal. He spent 60 days offshore to cross the Atlantic through 3,800 nautical miles, becoming the first physically disabled person to make the solo crossing from mainland Europe to South America and also smashing the able-bodied record, according to his team. (Photo by Jody Amiet/AFP Photo)





A woman cleans a prototype of the electric air-taxi “CityAirbus” set up on stage prior to its presentation in Ingolstadt, Germany on March 11, 2019. The four-seater “CityAirbus” is scheduled to make its first test flights this year. (Photo by Andreas Gebert/Reuters)





Revellers celebrate “Ash Monday” by participating in a colourful “flour war”, a traditional festivity marking the end of the carnival season and the start of the 40-day Lent period until the Orthodox Easter, in the port town of Galaxidi, Greece, March 11, 2019. (Photo by Alkis Konstantinidis/Reuters)





A reveller celebrates “Ash Monday” by participating in a colourful “flour war”, a traditional festivity marking the end of the carnival season and the start of the 40-day Lent period until the Orthodox Easter, in the port town of Galaxidi, Greece, March 11, 2019. (Photo by Alkis Konstantinidis/Reuters)





Revellers celebrate “Ash Monday” by participating in a colourful “flour war”, a traditional festivity marking the end of the carnival season and the start of the 40-day Lent period until the Orthodox Easter, in the port town of Galaxidi, Greece, March 11, 2019. (Photo by Alkis Konstantinidis/Reuters)





A reveller reacts amid a “flour war” during the “Ash Monday” celebrations, a traditional festivity marking the end of the carnival season and the start of the 40-day Lent period until the Orthodox Easter, in the port town of Galaxidi, Greece, on March 11, 2019. (Photo by Aris Messinis/AFP Photo)





A youth spins a flaming tire as part of a tradition marking the upcoming Clean Monday, the first day of Great Lent in the Eastern Orthodox Christian church calendar, on March 10, 2019 in the Romanian village of Poplaca. This annual “Clean Monday” ritual, is designed to ward off evil spirits before the onset of Lent on Monday, which marks the beginning of 40 days of abstention, when Orthodox Christians cut out meat, fish, eggs, and dairy. (Photo by Daniel Mihailescu/AFP Photo)





Villagers take part in a Chyrachka rite during the Shrovetide celebration in the village of Tonezh, some 280 km of Minsk, Belarus on March 10, 2019. Chyrachka is a kind of birds that live in this area. (Photo by Viktor Drachev/TASS)





Carnival revellers play their piccolos during the traditional Morgenstreich parade through the streets of Basel, Switzerland on March 11, 2019. (Photo by Arnd Wiegmann/Reuters)





Carnival revellers wearing lanterns during the “Morgestraich” parade through the streets of Basel, Switzerland, on Monday, March 11, 2019. (Photo by Georgios Kefalas/Keystone via AP Photo)





Participants wearing goat hides with bells around their waists and masks that include a meter tall, ribbon-covered formation topped with a foxtail participate in a Clean Monday festival at the village of Sohos, Monday, March 11, 2019. The procession is one of a great variety of customs across Greece. Celebrating the beginning of Lent it is rooted in the ancient past, many, experts believe, celebrating fertility. (Photo by Petros Giannakouris/AP Photo)





Participants in a Clean Monday festival in the village of Sohos ride in a pick-up truck on Monday, March 11, 2019. The procession is one of a great variety of customs across Greece. Celebrating the beginning of Lent it is rooted in the ancient past, many, experts believe, celebrating fertility. (Photo by Petros Giannakouris/AP Photo)





People carry a giant “Miel Otxin”', the symbol of the carnival, during an ancient rural carnival in the small Pyrenees village of Lantz, northern Spain, Sunday, March 3, 2019. The carnival is a long-standing rural tradition in which the forces of good and evil confront each other in a symbolic battle. From Sunday to Tuesday, during carnival week, in the little village of Lantz, the legendarily evil bandit “Miel Otxin”, represented by a doll filled with straw, is imprisoned and sentenced to death by fire. (Photo by Alvaro Barrientos/AP Photo)





Women in costumes during the Shrovetide Maslenitsa festival that celebrates the end of winter and marks the arrival of spring in Moscow, Russia on March 10, 2019. (Photo by Mikhail Metzel/TASS/Barcroft Images)





An artist performs during Maslenitsa (Shrovetide) holiday celebrations in front of the Historical Museum in Manezhnaya Square near the Kremlin Wall in Moscow, Russia, Saturday, March 9, 2019. Maslenitsa is a traditional Russian holiday marking the end of winter that dates back to the pagan times. (Photo by Alexander Zemlianichenko/AP Photo)





A homeless man sleeps on a monument dedicated to architect Vladislav Gorodetsky in the center of Ukrainian capital of Kiev on March 11, 2019. (Photo by Alkis Konstantinidis/AFP Photo)