A crow is rest on a branch of a tree that has shed its leaves ahead of Earth Day, amid concerns about the spread of coronavirus disease (COVID-19) in Colombo,Sri Lanka April 21, 2020. REUTERS/Dinuka Liyanawatte 

A black woodpecker flies over a field near the village of Zhukovka, Belarus April 21, 2020. REUTERS/Vasily Fedosenko 

Rainclouds gather above the skyline of Kritipur during the twenty-seventh day of the lockdown imposed by the government amid concerns about the spread of coronavirus disease at a park in Kathmandu, Nepal April 19, 2020. REUTERS/Navesh Chitrakar 

A view of the New York City skyline of Manhattan and the One World Trade Center during the outbreak of the coronavirus disease (COVID-19) in New York City, as seen from Weehawken, New Jersey, U.S. April 18, 2020. REUTERS/Eduardo Munoz 

People take a look at the New York City skyline of Manhattan and the Hudson River during the outbreak of the coronavirus disease (COVID-19) in New York City, as seen from Weehawken, New Jersey, U.S. April 18, 2020. REUTERS/Eduardo Munoz 

Police tape cordons off a football goal during lockdown amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain, April 15, 2020. Children in Spain, which has one of the strictest lockdowns in Europe, have been confined in their homes for over a month now, prompting some pediatrics experts to ask to lift the restrictions slightly over concerns over the children?s wellbeing. REUTERS/Susana vera 

Statue of St Aidan is seen at Lindisfarne Priory on Holy Island, as the spread of the coronavirus disease (COVID-19) continues, Holy Island, Britain, April 12, 2020. REUTERS/Lee Smith 

Statue of St Aidan is seen at Lindisfarne Priory on Holy Island, as the spread of the coronavirus disease (COVID-19) continues, Holy Island, Britain, April 12, 2020. REUTERS/Lee Smith 

A cross is seen on Holy Island, as the spread of the coronavirus disease (COVID-19) continues, Holy Island, Britain, April 12, 2020. REUTERS/Lee Smith 

A cross is seen in Holy Island, as the spread of the coronavirus disease (COVID-19) continues, Holy Island, Britain, April 12, 2020. REUTERS/Lee Smith 

A sign reading "Covid 19, No Visitors please, Thank you" is seen in Holy Island, as the spread of the coronavirus disease (COVID-19) continues, Holy Island, Britain, April 12, 2020. REUTERS/Lee Smith 

A cross is seen in Seahouses, as the spread of the coronavirus disease (COVID-19) continues, Seahouses, Britain, April 12, 2020. REUTERS/Lee Smith 

The clock on Spasskaya tower showing the time at noon, is pictured next to Moscow’s Kremlin, and St. Basil’s Cathedral as they stand on an empty square, during the coronavirus disease (COVID-19) outbreak, in Moscow, Russia, March 31, 2020. REUTERS/Maxim Shemetov SEARCH "COVID-19 NOON" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A man walks on an empty beach after Cyprus imposed a curfew to contain the spread of coronavirus disease (Covid-19) in Larnaca, Cyprus March 31, 2020. Reuters /Yiannis Kourtoglou 

A sign that reads "Closed to tourist traffic in the state" is seen on the highway A20 on the border of state Brandenburg to Mecklenburg-Vorpommern, as the spread of coronavirus disease (COVID-19) continues, in Germany, March 30, 2020. REUTERS/Annegret Hilse 

A sign that reads "Closed to tourist traffic in the state" is seen on the highway A20 on the border of state Brandenburg to Mecklenburg-Vorpommern, as the spread of coronavirus disease (COVID-19) continues, in Germany, March 30, 2020. REUTERS/Annegret Hilse 

A sign that reads "Closed to tourist traffic in the state" is seen on the highway A20 on the border of state Brandenburg to Mecklenburg-Vorpommern, as the spread of coronavirus disease (COVID-19) continues, in Germany, March 30, 2020. REUTERS/Annegret Hilse 

Bottles containing soap and alcohol gel, used by workers, are seen during a grapes harvest at a vineyard, following the outbreak of coronavirus disease (COVID-19) in San Felipe, Chile March 27, 2020. REUTERS/Ivan Alvarado 

Birds fly as the Israeli settlement of Ramat Givat Zeev is seen, in the Israeli-occupied West Bank March 19, 2020. REUTERS/Ammar Awad 

A view shows the empty Trocadero square near the Eiffel tower as a lockdown is imposed to slow the spreading of the coronavirus disease (COVID-19), in Paris, France March 18, 2020. REUTERS/Gonzalo Fuentes 

A man walks on the international bridge at the border line between Peru and Bolivia after Peru's government's announcement of the border closure in a bid to slow the spread of the new coronavirus (COVID-19), in Desaguadero, Bolivia, March 17, 2020. REUTERS/David Mercado 

People look out to sea in Blackpool as the number of coronavirus cases grow around the world, in Blackpool, Britain, March 17, 2020. REUTERS/Carl Recine 

A view shows the empty Tocadero square near the Eiffel tower in Paris as a lockdown imposed to slow the rate of the coronavirus disease (COVID-19) contagion started at midday in France, France, March 17, 2020. REUTERS/Christian Hartmann 

A man sits at an empty beach after local authorities increased restrictions by closing several busy beaches to the public, in order to prevent a spread of coronavirus (COVID-19), in Lima, Peru March 15, 2020. REUTERS/Sebastian Castaneda 

The Houses of Parliament stands in the distance on Westminster Bridge in London, Britain March 5, 2020. REUTERS/Simon Dawson 

A worker walks on a scaffolding at Piazza del Popolo square, after the government decree to close schools, cinemas, and urge people to work from home and not stand closer than one metre to each other in Rome, Italy, March 5, 2020. REUTERS/Yara Nardi 

General view of Humber Bridge as seen from King George Dock, where people were found in a shipping container, in Hull, Britain, March 3, 2020. REUTERS/Craig Brough 

An aerial view shows Israeli homes on the outskirts of the settlement of Kedumim in the northern Israeli-occupied West Bank February 25, 2020. Picture taken with a drone. REUTERS/Ilan Rosenberg 

Tents for tourists are seen Khan Eretz Ha'Mirdafim resort, near the Jewish settlement of Alon in the Israeli-occupied West Bank February 19, 2020. Picture taken February 19, 2020. REUTERS/Ronen Zvulun 

An aerial view shows Har Hemed, an Israeli settlement outpost located near the settlement of Kedumim, in the northern Israeli-occupied West Bank February 25, 2020. Picture taken with a drone. REUTERS/Ilan Rosenberg 

An aerial view shows Har Hemed, an Israeli settlement outpost located near the settlement of Kedumim, in the northern Israeli-occupied West Bank February 25, 2020. Picture taken with a drone. REUTERS/Ilan Rosenberg 

An aerial view shows Har Hemed, an Israeli settlement outpost located near the settlement of Kedumim, in the northern Israeli-occupied West Bank February 25, 2020. Picture taken with a drone. REUTERS/Ilan Rosenberg 

A view shows the Israeli settlement of Kedumim near Nablus in the Israeli-occupied West Bank February 25, 2020. REUTERS/Ammar Awad 

A view shows the Israeli settlement of Kedumim near Nablus in the Israeli-occupied West Bank February 25, 2020. REUTERS/Ammar Awad 

Mountains are seen shrouded in haze near Gloucester, New South Wales, Australia, February 19, 2020. Picture taken February 19, 2020. REUTERS/Loren Elliott 

A tree is silhouetted shortly after sunset at a soy farm in Caaguazu, Paraguay February 17, 2020. Picture taken February 17, 2020. REUTERS/Jorge Adorno 

A locusts swarm is seen in flight near the town of Kithimani, Kenya, February 18, 2020. Picture taken February 18, 2020. REUTERS/Baz Ratner 

A smoke rises from a port of Tripoli after being attacked in Tripoli, Libya February 18, 2020. REUTERS/Ahmed Elumami 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

Flooded fields are pictured following the Storm Dennis near Carmarthen, South Wales, Britain, February 17, 2020. REUTERS/Rebecca Naden 

A layer of frozen fog hangs above a field near a Tyendinaga Mohawk Territory camp at a railway crossing in Tyendinaga, Ontario, Canada February 14, 2020. Picture taken February 14, 2020. REUTERS/Chris Helgren 

A woman struggles with an umbrella as she walks in front of St Paul's Cathedral during storm Dennis in London, Britain, February 15, 2020. REUTERS/Hannah McKay 

Waves crash over the lighthouse at Porthcawl, South Wales, Britain February 15, 2020. REUTERS/Peter Cziborra 

A picture taken from the Montenvers railway station near Chamonix, at the Mont Blanc mountain range in the French Alps, February 13, 2020. Ludovic Marin/Pool via REUTERS 

A view of Al Jumhuriya bridge during the ongoing anti-government protests in Baghdad, Iraq February 12, 2020. REUTERS/Thaier al-Sudani 

Waves crash over the lighthouse at Porthcawl, South Wales, Britain February 12, 2020. REUTERS/Rebecca Naden 

Waves crash over the lighthouse at Porthcawl, South Wales, Britain February 12, 2020. REUTERS/Rebecca Naden 

Waves crash over the lighthouse at Porthcawl, South Wales, Britain February 12, 2020. REUTERS/Rebecca Naden 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

Large waves hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

A man views large waves as they hit the harbour wall at Newhaven, southern Britain, February 11, 2020. REUTERS/Toby Melville 

People walk on the old bridge during snow in the old city of Mosul, Iraq February 10, 2020. Picture taken February 10, 2020. REUTERS/Abdullah Rashid