Opposition National Assembly President Juan Guaido holds up a raised fist as he waits to speak at a conference on economic plans for reviving the country at Venezuelan Central University, in Caracas, Venezuela, Thursday, January 31, 2019. An independent U.N. human rights monitor says economic sanctions are compounding a “grave crisis” in Venezuela. (Photo by Rodrigo Abd/AP Photo)





Venezuela's President Nicolas Maduro gestures during a meeting with soldiers at a military base in Caracas, Venezuela on January 30, 2019. (Photo by Miraflores Palace/Handout via Reuters)





Family members pay their final respects to Felipe Gomez Alonzo in Yalambojoch, Guatemala, Saturday, January 26, 2019. The 8-year-old migrant boy died in U.S. custody at a New Mexico hospital on Christmas Eve. Felipe and his father were apprehended by the U.S. Border Patrol in mid-December. (Photo by Oliver de Ros/AP Photo)





A protestor covered in mud performs during a demonstration in front of the headquarters of Brazilian mining company Vale in Rio de Janeiro, Brazil, on January 28, 2019. A tsunami of mineral-laced mud broke through a dam at an iron-ore mine owned by Vale near the town of Brumadinho on January 25 with the official toll of the disaster standing so far at 65 dead and around 280 missing. (Photo by Fabio Teixeira/AFP Photo)





French forensic doctor Philippe Charlier (R) examines the Guano mummy with Ecuadorian technicians in a laboratory at the Cultural Heritage Institute of Ecuador in Quito on January 30, 2019. Charlier is studying the 16th-century mummy of a friar found in the town of Guano, Ecuador in 1949. As the body was placed in a wall with a cold, dry environment, it was protected from flies and larvae, and the preserved tissues still contain traces of the rheumatoid polyarthritis that have captured the attention of Charlier, who has studied the remains of Hitler, Descartes, Robespierre and of the first discovered specimen of the Cro-Magnon man. (Photo by Rodrigo Buendía/AFP Photo)





Supporters of presidential frontrunner Nayib Bukele, of the Grand National Alliance for Unity, GANA, take part in a rally in San Salvador, El Salvador, Wednesday, January 30, 2019. Salvadorans go to the polls to elect a new president on Sunday. (Photo by Moises Castillo/AP Photo)





Supporters of presidential candidate Carlos Calleja, of the Nationalist Republican Alliance (ARENA) cheer during the last day of election campaign in San Salvador, El Salvador, January 30, 2019. (Photo by Jose Cabezas/Reuters)





Belgian students claim for urgent measures to combat climate change during a demonstration in central Brussels, Belgium on January 31, 2019. (Photo by Yves Herman/Reuters)





An 18-year-old Indonesian woman is caned in public in Banda Aceh on January 31, 2019, as punishment for being caught cuddling with her boyfriend. Two teenagers were whipped in Indonesia's Aceh province on January 31 after they were caught cuddling in public – a crime under the conservative region's Islamic law. (Photo by Chaideer Mahyuddin/AFP Photo)





A Zora robot performs to encourage elderly people in an EHPAD (Housing Establishment for Elderly Dependant People) in Paris, Thursday, January 31, 2019. The Zora robot will promote emotional well-being by helping elderly people for exercises and manage stress through interactive technology. (Photo by Francois Mori/AP Photo)





In this January 28, 2019, photo, a Chinese girl poses for a souvenir photo with the cluster of pig sculptures on displayed outside a shopping mall in Nanning in south China's Guangxi Zhuang Autonomous Region. Chinese will celebrate Lunar New Year on Feb. 5 this year which marks the Year of the Pig on the Chinese zodiac. (Photo by Chinatopix via AP Photo)





Russian artist Maria Gasanova adjusts her make-up as she finishes working on a body art creation, part of her “Alive Painting” project, during a fashion exhibition in the Siberian city of Krasnoyarsk, Russia on January 31, 2019. (Photo by Ilya Naymushin/Reuters)





A visitor poses for a picture with Russian artist Maria Gasanova, who presents a body art creation, part of her “Alive Painting” project, during a fashion exhibition in the Siberian city of Krasnoyarsk, Russia on January 31, 2019. (Photo by Ilya Naymushin/Reuters)





People walk by trees covered in ice from the mist of the falls in Niagara Falls, Ontario, Canada on January 31, 2019. A brutal cold wave moved eastward on January 31, 2019, after bringing temperatures in the US Midwest lower than those in Antarctica, grounding flights, closing schools and businesses and raising fears of hypothermia. (Photo by Lars Hagberg/AFP Photo)





Athletes compete in the ice climbing on icicles routes with the height of 22, 110, 120 and 130 metres during the 5th International Emrah Ozbey Ice Climbing Festival in Erzurum, Turkey on January 31, 2019. Total of 128 athletes from 10 different countries compete in the 4 different icicle routes. (Photo by Yunus Okur/Anadolu Agency/Getty Images)





Man digs fort in snow during a winter storm in Buffalo, New York, U.S., January 30, 2019. (Photo by Lindsay Dedario/Reuters)





A firefighter walks past an ice-encrusted home after an early morning house fire Wednesday, January 30, 2019 in St. Paul, Minn. Firefighters were called to the house fire in the North End shortly after 4:15 a.m. The air temperature was 27 degrees below zero Wednesday morning, with windchills at 52 degrees below zero. No injuries were reported. (Photo by Jean Pieri/Pioneer Press via AP Photo)





A man takes a selfie video with the Chicago skyline in the background from Montrose Harbor, Chicago, Illinois on January 30, 2019. Chicago's record for the coldest temperature was shattered on Wednesday as the polar vortex struck the biggest city in the U.S. Midwest, according to the National Weather Service. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





A harbor light is covered by snow and ice on the Lake Michigan at 39th Street Harbor, Wednesday, January 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (Photo by Nam Y. Huh/AP Photo)





Large waves crash over a train as it passes through Dawlish in southwest Britain, January 31, 2019. (Photo by Toby Melville/Reuters)





Two young women huddle up in their coats as they brave the cold in Newcastle, England on February 1, 2019. Women in skimpy dresses and men in t-shirts enjoyed a drink and a dance as they celebrated January finally being over. (Photo by Will Walker/North News and Pictures)





Three scantily clad pals make their way through the snow as it falls around them in Newcastle, England on February 1, 2019. (Photo by Will Walker/North News and Pictures)





It may be snowing, but these young women still found time for a quick snap in Newcastle, England last night, February 1, 2019. (Photo by Will Walker/North News and Pictures)