Port Authority of New York Police officers stand in socially distant circle on the floor of the nearly empty Oculus transportation hub in lower Manhattan during the outbreak of the coronavirus disease (COVID-19) in New York City, New York, U.S., May 21, 2020. REUTERS/Mike Segar

To ensure social distancing does not make diners feel isolated during the coronavirus disease (COVID-19) outbreak, mannequins clad in 1940s-era clothing occupy some tables at The Inn at Little Washington, a Michelin three-star restaurant, which plans to reopen shortly in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

To ensure social distancing does not make diners feel isolated during the coronavirus disease (COVID-19) outbreak, mannequins clad in 1940s-era clothing occupy some tables at The Inn at Little Washington, a Michelin three-star restaurant, which plans to reopen soon in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

Executive Assistant Jessie Dawson sits among mannequins occupying some tables so diners will not feel isolated by coronavirus disease (COVID-19) social distancing measures when The Inn at Little Washington, a Michelin three-star restaurant, reopens shortly in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

Executive Assistant Jessie Dawson sits among mannequins occupying some tables so diners will not feel isolated by coronavirus disease (COVID-19) social distancing measures when The Inn at Little Washington, a Michelin three-star restaurant, reopens shortly in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY

To ensure social distancing does not make diners feel isolated during the coronavirus disease (COVID-19) outbreak, mannequins clad in 1940s-era clothing occupy some tables at The Inn at Little Washington, a Michelin three-star restaurant, which plans to reopen soon in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

To ensure social distancing does not make diners feel isolated during the coronavirus disease (COVID-19) outbreak, mannequins clad in 1940s-era clothing occupy some tables at The Inn at Little Washington, a Michelin three-star restaurant, which plans to reopen soon in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

Executive Assistant Jessie Dawson sits among mannequins occupying some tables so diners will not feel isolated by coronavirus disease (COVID-19) social distancing measures when The Inn at Little Washington, a Michelin three-star restaurant, reopens shortly in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

To ensure social distancing does not make diners feel isolated during the coronavirus disease (COVID-19) outbreak, mannequins clad in 1940s-era clothing occupy some tables at The Inn at Little Washington, a Michelin three-star restaurant, which plans to reopen soon in Washington, Virginia, U.S., May 20, 2020. REUTERS/Kevin Lamarque

A break room for workers was created in the gift shop so as to keep people physically distant at Paul Reed Smith Guitars manufacturing plant in preparation of its reopening as the outbreak of the coronavirus (COVID-19) disease continues in Stevensville, Maryland, U.S., May 14, 2020. Picture taken May 14, 2020. REUTERS/Leah Millis

New signs to keep workers physically distant can be seen at Paul Reed Smith Guitars manufacturing plant before its reopening as the outbreak of the coronavirus (COVID-19) disease continues in Stevensville, Maryland, U.S., May 14, 2020. Picture taken May 14, 2020. REUTERS/Leah Millis

Children Mila and Teo Principe and Alexandria and Juliana Lyles, maintain social distance to prevent the spread of coronavirus disease (COVID-19) during an outdoor movie night at a home in Fort Leavenworth, Kansas, U.S., April 8, 2020. Picture taken April 8, 2020. REUTERS/Arin Yoon TPX IMAGES OF THE DAY

Members of the audience sit at socially-distant intervals due to the coronavirus disease (COVID-19) outbreak as U.S. President Donald Trump and first lady Melania Trump hold a tree-planting ceremony outside the Oval Office on the 50th anniversary of Earth Day at the White House in Washington, U.S. April 22, 2020. REUTERS/Jonathan Ernst

Sisters Sylvia (R), Stephanie Falcomer (L) and grandson Peter Henry hold a 'socially distant' 94th birthday party in their driveway for their mother and grandmother Marcella Falcomer, who came to America from Italy in 1955, as they say hello to their relatives on a Zoom video conference call during the outbreak of the coronavirus disease (COVID-19) in West Nyack, New York, U.S., April 5, 2020. REUTERS/Mike Segar

Peter Henry looks on as his grandmother Marcella Falcomer, who came to America from Italy in 1955, talks to relatives on a Zoom video conference call on the occasion of her 94th birthday party during a family celebration in her driveway during the outbreak of the coronavirus disease (COVID-19) in West Nyack, New York, U.S., April 5, 2020. REUTERS/Mike Segar

Sisters Sylvia (R) and Stephanie Falcomer (L) hold a 'socially distant' 94th birthday party in their driveway for their mother Marcella Falcomer who came to America from Italy in 1955, as they say hello to their relatives on a Zoom video conference call during the outbreak of the coronavirus disease (COVID-19) in West Nyack, New York, U.S., April 5, 2020. REUTERS/Mike Segar

Sisters Sylvia (R), Stephanie Falcomer and grandson Peter Henry hold a 'socially distant' 94th birthday party in their driveway for their mother and grandmother Marcella Falcomer, who came to America from Italy in 1955, as they say hello to their relatives on a Zoom video conference call during the outbreak of the coronavirus disease (COVID-19) in West Nyack, New York, U.S., April 5, 2020. REUTERS/Mike Segar TPX IMAGES OF THE DAY

A general view shows houses decorated with lanterns and lights during the Tihar festival, also called Diwali, the Hindu festival of lights in Kathmandu, Nepal October 26, 2019. REUTERS/Navesh Chitrakar

Tourists sit on a bastion wall to watch a distant lightning storm, in Mdina, Malta October 26, 2019. Picture taken with long exposure. REUTERS/Darrin Zammit Lupi

A general view of The Nile River, houses and agricultural land from the window of an airplane in Luxor, Egypt October 9, 2019. Picture taken October 9, 2019. REUTERS/Mohamed Abd El Ghany

A general view shows the Nile River, houses and agricultural land seen from the window of an airplane, in Luxor, Egypt October 9, 2019. Picture taken October 9, 2019. REUTERS/Mohamed Abd El Ghany

The Wildstrubel mountain and the Plaine Morte glacier are pictured, days ahead federal elections, in Lenk, Switzerland October 14, 2019. Picture taken October 14, 2019. REUTERS/Denis Balibouse

Olive groves stand in the fields in Porcuna, southern Spain October 15, 2019. Picture taken October 15, 2019. REUTERS/Marcelo del Pozo

An elephant walks through the Maasai Mara National Reserve, Kenya, October 15, 2019. REUTERS/Baz Ratner TPX IMAGES OF THE DAY

A general view of the urban landscape of Tel Aviv as most Israeli Jews refrain from driving during the 25-hour period of Yom Kippur, Israel October 9, 2019. REUTERS/Ammar Awad

A paraglider flies above the Bossons glacier in the Mont-Blanc massif on a sunny autumn day in Chamonix, France October 8, 2019. REUTERS/Denis Balibouse

The moon is seen over houses and the Temple of Hercules at Amman Citadel, an ancient Roman landmark in Amman, Jordan October 7, 2019. REUTERS/Amr Abdallah Dalsh

Sun is seen in the skyline in Bangkok, Thailand, Thailand, September 30, 2019. REUTERS/Soe Zeya Tun

A male deer walks in a field in Republican landscape reserve "Nalibokski" near the village of Kozliki, Belarus September 27, 2019. REUTERS/Vasily Fedosenko

A general view of buildings by the Nile River in Cairo, Egypt September 26, 2019. REUTERS/Mohamed Abd El Ghany

A view of the steel bridge known as "Imbaba Bridge" over the Nile River and the surrounding buildings in Cairo, Egypt September 26, 2019. REUTERS/Mohamed Abd El Ghany

A segment of the Planpincieux glacier is seen on the Italian side of the Mont Blanc massif area of Planpincieux, Aosta, Italy, September 26, 2019. REUTERS/Yara Nardi

A segment of the Planpincieux glacier is seen on the Italian side of the Mont Blanc massif area of Planpincieux, Aosta, Italy, September 26, 2019. REUTERS/Yara Nardi

Skiers cross the snow covered Jamtalferner glacier near Galtuer, Austria, February 18, 2019. REUTERS/Lisi Niesner

A bird flies away over the East River from United Nations Headquarters during the 2019 United Nations Climate Action Summit at U.N. headquarters in New York, U.S., September 23, 2019. REUTERS/Lucas Jackson

Liechtenstein and its capital Vaduz are pictured from above Bad Ragaz in Mels, Switzerland, September 22, 2019. Picture taken September 22, 2019. REUTERS/Denis Balibouse

The Norwegian Sea is seen from the window of an atmospheric research aircraft during a flight across the Arctic Circle from northern Sweden, July 30, 2019. Picture taken July 30, 2019. REUTERS/Hannah McKay

Snow-covered mountains are seen from an atmospheric research aircraft en route to the Norwegian Sea from northern Sweden, July 30, 2019. Picture taken July 30, 2019. REUTERS/Hannah McKay

Clouds and land are seen from an atmospheric research aircraft en route to the Norwegian Sea from northern Sweden, July 30, 2019. Picture taken July 30, 2019. REUTERS/Hannah McKay

The early morning sun lights up the London skyline, seen from east London, Britain, September 10, 2019. REUTERS/Angie Dixon

A waterspout is seen from the German NGO Sea-Eye migrant rescue ship 'Alan Kurdi' as it waits for further instructions after rescuing Tunisian migrants, in international waters off Malta in the central Mediterranean Sea, September 4, 2019. REUTERS/Darrin Zammit Lupi

Downtown Los Angeles is seen behind an electricity pylon through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY

Downtown Los Angeles and an airplane are seen through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson

Downtown Los Angeles is seen through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson

Downtown Los Angeles is seen behind an electricity pylon through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson

Downtown Los Angeles is seen behind an electricity pylon through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson

Downtown Los Angeles is seen behind electricity lines through the morning marine layer in Los Angeles, California, U.S., August 20, 2019. REUTERS/Lucy Nicholson

Graves in a cemetery are seen from the air during a mass take off at the annual Bristol hot air balloon festival in Bristol, Britain, August 8, 2019. REUTERS/Toby Melville

A mosque is seen amongst residential housing from the air during a mass take off at the annual Bristol hot air balloon festival in Bristol, Britain, August 8, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY

"Distante", from La Palmosilla cattle ranch, rests in the corral before the seventh running of the bulls at the San Fermin festival in Pamplona, Spain, July 12, 2019. REUTERS/Susana Vera

The Nairobi skyline is seen in the background as a zebra walks through the Nairobi National Park, near Nairobi, Kenya, December 3, 2018. REUTERS/Amir Cohen TPX IMAGES OF THE DAY

Lightning strikes over the Mediterranean sea during a rain storm near the city of Ashkelon, Israel November 23, 2018 REUTERS/Amir Cohen

Farmers march on a flyover during a protest rally demanding loan waivers and the transfer of forest lands to villagers who have farmed there for decades, in Mumbai, India, November 22, 2018. REUTERS/Francis Mascarenhas

A view of the Golden Gate Bridge in San Francisco, California, U.S., November 20, 2018. Picture taken November 20, 2018. REUTERS/Mario Anzuoni

A view shows the San Francisco skyline from the Golden Gate Bridge in San Francisco, California, U.S., November 20, 2018. Picture taken November 20, 2018. REUTERS/Mario Anzuoni

Clouds can be seen above a dust storm as it descends upon the city of Sydney in Australia, November 22, 2018. Picture taken through the window. REUTERS/David Gray

Undocumented Venezuelan migrants walk on the road between Pamplona and La Laguna near Mutiscua, Colombia, August 27, 2018. Venezuelans walk through sweltering lowlands, agricultural highlands and frigid mountains during their trek. REUTERS/Carlos Garcia Rawlins

Boats can be seen anchored near the Daintree River and Snapper Island along the coast of northern Queensland, near the township of Port Douglas in Australia, November 20, 2018. Picture taken November 20, 2018. REUTERS/David Gray