Sugar beets covered in snow at a processing facility in East Grand Forks, Minnesota, U.S., November 22, 2019. Due to a wet summer and early frost, sugar beet farmers were forced to leave hundreds of acres of sugar beet crop unharvested, a hard hit for the US agriculture industry already experiencing a difficult few years. Picture taken November 22, 2019. REUTERS/Nicholas Pfosi

Sugar beets piled in a large storage building, which is typically completely full, in East Grand Forks, Minnesota, U.S., November 22, 2019. Due to a wet summer and early frost, sugar beet farmers were forced to leave hundreds of acres of sugar beet crop unharvested, a hard hit for the US agriculture industry already experiencing a difficult few years. Picture taken November 22, 2019. REUTERS/Nicholas Pfosi

Sugar beets covered in snow at a processing facility in East Grand Forks, Minnesota, U.S., November 22, 2019. Due to a wet summer and early frost, sugar beet farmers were forced to leave hundreds of acres of sugar beet crop unharvested, a hard hit for the US agriculture industry already experiencing a difficult few years. Picture taken November 22, 2019. REUTERS/Nicholas Pfosi

Sugar beets covered in snow at a processing facility in East Grand Forks, Minnesota, U.S., November 22, 2019. Due to a wet summer and early frost, sugar beet farmers were forced to leave hundreds of acres of sugar beet crop unharvested, a hard hit for the US agriculture industry already experiencing a difficult few years. Picture taken November 22, 2019. REUTERS/Nicholas Pfosi

A skull is pictured as participants parade through the town during the annual Bonfire Night festivities in Lewes, Britain, November 5, 2019. REUTERS/Toby Melville

A person takes a picture of Wotruba church as the sun sets in Vienna, Austria November 3, 2019. REUTERS/Leonhard Foeger

A person takes a picture of Wotruba church as the sun sets in Vienna, Austria November 3, 2019. REUTERS/Leonhard Foeger

A participant wearing a costume attends a Halloween party at a village in Bangkok, Thailand, October 31, 2019. REUTERS/Athit Perawongmetha

Garage doors are seen outside Block 23 in an apartment neighbourhood in New Belgrade, Serbia, July 31, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica SEARCH "ARCHITECTURE DJURICA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A view of tropical fish and crabs in plastic bags on display for sale in Hong Kong, China, October 25, 2019. REUTERS/Umit Bektas

A view of tropical fish and crabs in plastic bags on display for sale in Hong Kong, China, October 25, 2019. REUTERS/Umit Bektas

A view shows a giant foot print, which was trodden on the ground following an early snowfall in the Siberian city of Omsk, Russia October 18, 2019. REUTERS/Alexey Malgavko TPX IMAGES OF THE DAY

A pipe with a bottle attached to the end is seen outside a house in Aurangabad, India, August 2, 2019. REUTERS/Francis Mascarenhas

A zompopa ant, reared for human consumption, is pictured in the insect farm of biologist Federico Paniagua, who promotes the ingestion of a wide variety of insects as a low-cost and nutrient-rich food, in Grecia, Costa Rica July 13, 2019. Picture taken July 13, 2019. REUTERS/Juan Carlos Ulate TPX IMAGES OF THE DAY

Decoration pieces made of ocean shells with painted alphabets, to attract visitors, put up for sale along Clifton beach, Karachi, Pakistan October 1, 2019. REUTERS/Akhtar Soomro

A pile of marijuana is being incinerated at the 28th Infantry Batallion in Tijuana, Mexico September 26, 2019. REUTERS/Jorge Duenes

A heart-shaped Chinese flag installation ahead of the 70th founding anniversary of People's Republic of China is seen on a street in Shanghai, China, September 26, 2019. Picture taken with a slow shutter speed and a zoom effect. REUTERS/Aly Song

A heart-shaped Chinese flag installation ahead of the 70th founding anniversary of People's Republic of China is seen on a street in Shanghai, China September 26, 2019. Picture taken with a slow shutter speed and a zoom effect. REUTERS/Aly Song

A heart-shaped Chinese flag installation ahead of the 70th founding anniversary of People's Republic of China is seen on a street in Shanghai, China, September 26, 2019. Picture taken with a slow shutter speed and a zoom effect. REUTERS/Aly Song

An installation of cabbage and baby doll is seen during the annual harvest festival "Dazhynki - 2019" in the village of Krupitsa, Belarus September 20, 2019. REUTERS/Vasily Fedosenko

A small dog competes in the 14th annual Helen Woodward Animal Center "Surf-A-Thon" where more than 70 dogs competed in five different weight classes for "Top Surf Dog 2019" in Del Mar, California, U.S., September 8, 2019. REUTERS/Mike Blake

A dog jumps off a surfboard while competing at the 14th annual Helen Woodward Animal Center "Surf-A-Thon" where more than 70 dogs competed in five different weight classes for "Top Surf Dog 2019" in Del Mar, California, U.S., September 8, 2019. REUTERS/Mike Blake

A dog jumps off a surfboard while competing at the 14th annual Helen Woodward Animal Center "Surf-A-Thon" where more than 70 dogs competed in five different weight classes for "Top Surf Dog 2019" in Del Mar, California, U.S., September 8, 2019. REUTERS/Mike Blake

Police demonstrate a water cannon equipped vehicle at the compound of the Police Tactical Unit in Hong Kong, China August 12, 2019. REUTERS/Thomas Peter

The alpine village of Hallstatt glows at dusk on the banks of Hallstaettersee lake in Hallstatt, Austria July 27, 2019. REUTERS/Lisi Niesner

The alpine village of Hallstatt glows at dusk on the banks of Hallstaettersee lake in Hallstatt, Austria July 27, 2019. REUTERS/Lisi Niesner

People are silhouetted against the setting sun at "El Mirador de la Alemana" (The viewpoint of the German), as the summer's second heatwave hits Spain, in Malaga, southern Spain July 24, 2019. REUTERS/Jon Nazca

People are silhouetted against the setting sun at "El Mirador de la Alemana" (The viewpoint of the German), as the summer's second heatwave hits Spain, in Malaga, southern Spain July 24, 2019. REUTERS/Jon Nazca

A cat walks near the border fence between Mexico and the U.S in Tijuana, Mexico, July 20, 2019. REUTERS/Carlos Jasso

Dummies are pictured at a market in a town of Baikonur, Kazakhstan July 17, 2019. REUTERS/Maxim Shemetov

The moon is seen during a partial lunar eclipse over the Winged Lion of Venice at the St. Mark square in Venice, Italy July 16, 2019. REUTERS/Manuel Silvestri TPX IMAGES OF THE DAY

A partial lunar eclipse is seen in Brasilia, Brazil July 16, 2019. REUTERS/Adriano Machado

A partial lunar eclipse is seen outside the Planalto Palace in Brasilia, Brazil July 16, 2019. REUTERS/Adriano Machado

A moon is seen during a partial lunar eclipse in Brasilia, Brazil, July 16, 2019. REUTERS/Ueslei Marcelino

A moon is seen during a partial lunar eclipse in Brasilia, Brazil, July 16, 2019. REUTERS/Ueslei Marcelino

A view of Lower Antelope Canyon near Page, Arizona, U.S. June 26, 2019. Picture taken June 26, 2019. REUTERS/Pamela J. Peters

Tamar Lehman, 32, social counsellor for mentally ill young adults, plays an accordion next to books placed inside a cultural center used by "Yung Yidish," a non-profit organisation aiming to preserve Yiddish culture, at the Central Bus Station in Tel Aviv, Israel, May 25, 2019. Lehman comes to the station often to practise dancing and play the accordion. "I felt this building is just like the people I work with - they may appear totally confused within themselves, not understood, bizarre, but the more you learn about the people and their inner structure you slowly become more familiar with their inner world, with all its craziness, and you see the beauty," she said. REUTERS/Corinna Kern SEARCH "ISRAEL BUS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The shadow of a child is cast on a beach in the city of Vina del Mar, Chile July 14, 2019. REUTERS/Rodrigo Garrido

General view of the sunset pictured from the beach at the Polish Baltic Sea coast near Choczewo, Poland July 10, 2019. REUTERS/Kacper Pempel

A general view of Fanore beach in evening light, Fanore, Ireland, July 7, 2019. REUTERS/Peter Cziborra

Catholics from Belarus and neighbouring countries carry candles during the annual Icon of the Mother of God procession, part of the Budslav Fest, which is listed as a UNESCO Cultural Heritage of Belarus, in the village of Budslav, Belarus July 5, 2019. Picture taken with long exposure on July 5, 2019. REUTERS/Vasily Fedosenko TPX IMAGES OF THE DAY

Rain clouds are lit by the setting sun near the village of Chernogorovo, Bulgaria, July 3, 2019. REUTERS/Stoyan Nenov

Umbrellas are placed to block security cameras outside a police headquarters, during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu TPX IMAGES OF THE DAY

Street signs are seen in a flooded street after heavy rains caused Paraguay River to overflow, in a neighbourhood on the outskirts of Asuncion, Paraguay May 26, 2019. Picture taken May 26, 2019. The signs read: "Stop" and "Muelle, access, exit". REUTERS/Jorge Adorno

A skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders is seen in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

People wearing masks march through the streets during Easter celebrations in Ceske Budejovice, Czech Republic, April 19, 2019. REUTERS/David W Cerny

A man wearing a mask prepares to march through the streets during Easter celebrations in Ceske Budejovice, Czech Republic, April 19, 2019. REUTERS/David W Cerny

Participants throw toys towards law enforcement officers during a rally held by members of Ukrainian nationalist movements, who demand an investigation into top officials' activities suspected of corruption, near the presidential administration headquarters in Kiev, Ukraine March 16, 2019. REUTERS/Gleb Garanich

Horse Racing - Cheltenham Festival - Cheltenham Racecourse, Cheltenham, Britain - March 14, 2019 General view of a racegoer during Cheltenham Festival Action Images via Reuters/Paul Childs

A pro-Brexit protester stands outside the Houses of Parliament in London, Britain March 13, 2019. REUTERS/Hannah Mckay

Mining lamps are recharged in the mine "La Escondida" (The hidden one) in Villablino, Spain, December 27, 2018. Picture taken December 27, 2018. REUTERS/Eloy Alonso

Windows take on different shapes as they reflect upon the water along a wharf in Portland, Maine, U.S., December 24, 2018. REUTERS/Kevin Lamarque

Thousands of starlings fly in a 'murmuration' as they return to roost at dusk near Ely in Cambridgeshire, Britain December 24, 2018. REUTERS/Hannah McKay TPX IMAGES OF THE DAY

Thousands of starlings fly in a 'murmuration' as they return to roost at dusk near Ely in Cambridgeshire, Britain December 24, 2018. REUTERS/Hannah McKay

Mini-pigs perform during the presentation in Balashikha, Russia December 11, 2018. Picture taken December 11, 2018. REUTERS/Maxim Shemetov

A damaged border post is illuminated during a police patrol at a restricted mined area at the Chilean and Peruvian border, in Arica, Chile, November 15, 2018. REUTERS/Ivan Alvarado SEARCH "ALVARADO ARICA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A policeman uses a lamp to light up a train line used by migrants to guide themselves and avoid the frontier check points at a mined area of desert at the Chilean and Peruvian border, in Arica, Chile, November 14, 2018. REUTERS/Ivan Alvarado SEARCH "ALVARADO ARICA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A milestone is seen using a night vision device during a police patrol at a restricted mined area, at the Chilean and Peruvian border in Arica, Chile, November 15, 2018. REUTERS/Ivan Alvarado SEARCH "ALVARADO ARICA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.