The sun rises behind Coombe Hill monument as the spread of the coronavirus disease (COVID-19) continues, near Dunsmore, Britain, April 22, 2020. REUTERS/Matthew Childs TPX IMAGES OF THE DAY

The sun rises behind Coombe Hill monument as the spread of the coronavirus disease (COVID-19) continues, near Dunsmore, Britain, April 22, 2020. REUTERS/Matthew Childs

A meteorite is seen during the Lyrid Meteor Shower in Nettleden, Hertfordshire, Britain, April 22, 2020. REUTERS/Matthew Childs

The sun rises behind Steetley Pier in Hartlepool as the spread of the coronavirus disease (COVID-19) continues, Hartlepool, Britain, April 22, 2020. REUTERS/Lee Smith

The sun rises behind Steetley Pier in Hartlepool as the spread of the coronavirus disease (COVID-19) continues, Hartlepool, Britain, April 22, 2020. REUTERS/Lee Smith

A general view shows birds on Furzton Lake during sunrise as the spread of the coronavirus disease (COVID-19) continues, in Milton Keynes, Britain April 21, 2020. REUTERS/Andrew Boyers

A general view of the sunrise over Furzton Lake as the spread of the coronavirus disease (COVID-19) continues, in Milton Keynes, Britain April 21, 2020. REUTERS/Andrew Boyers

The sun rises over a nopal (prickly pear) cactus field, one of the national staple foods, as the spread of the coronavirus disease (COVID-19) continues, at Milpa Alta municipality in Mexico City, Mexico April 16, 2020. Picture taken April 16, 2020. REUTERS/Carlos Jasso

General view of a tree as the sun rises in Hemel Hempstead, Britain, April 5, 2020. REUTERS/Matthew Childs

The village of Kronberg (foreground) and the city of Frankfurt are seen on a hazy morning from a hill near Kronberg, Germany, March 26, 2020, as the spread of the coronavirus disease (COVID-19) continues. REUTERS/Kai Pfaffenbach

The sun rises near the Austrian-German border after the Austrian government decided to close its borders to foreigners as a preventive measure against the coronavirus disease (COVID-19) near Rosenheim, Germany, March 19, 2020. REUTERS/Andreas Gebert

The sun rises above one of the towers of Tower Bridge in London, Britain, February 26, 2020. REUTERS/Hannah McKay

The sun rises above one of the towers of Tower Bridge in London, Britain, February 26, 2020. REUTERS/Hannah McKay

The sun rises above one of the towers of Tower Bridge in London, Britain, February 26, 2020. REUTERS/Hannah McKay

The sun rises behind one of the towers of Tower Bridge in London, Britain, February 26, 2020. REUTERS/Hannah McKay

The sun rises behind the spire of Saint Paul's Anglican Pro-Cathedral and the dome of the Basilica of Our Lady of Mount Carmel as Christians observe Ash Wednesday marking the beginning of Lent in Valletta, Malta February 26, 2020. REUTERS/Darrin Zammit Lupi

The sun rises behind the Cinquantenaire arch, erected in 1905 to replace a temporary monument built to commemorate the fiftieth anniversary of Belgian independence, in Brussels, Belgium February 21, 2020. REUTERS/Yves Herman

A view shows the Israeli settlement of Gilo on a foggy morning in the Israeli-occupied West Bank February 17, 2020. Picture taken February 17, 2020. REUTERS/Mustafa Ganeyeh

A view shows the city of Jerusalem on a foggy morning as seen from the Palestinian village of Al-Walaja in the Israeli-occupied West Bank February 17, 2020. Picture taken February 17, 2020. REUTERS/Mustafa Ganeyeh

A view shows the Israeli settlement of Gilo on a foggy morning in the Israeli-occupied West Bank February 17, 2020. Picture taken February 17, 2020. REUTERS/Mustafa Ganeyeh

The U.S. Department of Justice building is bathed in morning light at sunrise in Washington, U.S., February 14, 2020. REUTERS/Mary F. Calvert

At sunrise, an upper floor window is illuminated in the U.S. Department of Justice building in Washington, U.S., February 14, 2020. REUTERS/Mary F. Calvert TPX IMAGES OF THE DAY

An Orthodox Church is lit by the rising sun in the village of Krutilovichi, Belarus February 10, 2020. REUTERS/Vasily Fedosenko

The full Snow Moon sets over the horizon at dawn in Ronda, southern Spain February 9, 2020. REUTERS/Jon Nazca

The full Snow Moon sets over the horizon at dawn in Ronda, southern Spain February 9, 2020. REUTERS/Jon Nazca

The full Snow Moon sets through a tree over the horizon at dawn in Ronda, southern Spain February 9, 2020. REUTERS/Jon Nazca

The full Snow Moon sets through a tree over the horizon at dawn in Ronda, southern Spain February 9, 2020. REUTERS/Jon Nazca

A man runs in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Deer are seen rutting in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

Deer are seen grazing in the early morning light at Richmond Park in London, Britain, February 7, 2020. REUTERS/Toby Melville

The sun is seen rising behind skyscrapers and buildings in in the City of London financial district, London, Britain, February 5, 2020. REUTERS/Toby Melville

The sun is seen rising behind skyscrapers and buildings in in the City of London financial district, London, Britain, February 5, 2020. REUTERS/Toby Melville

Skyscrapers and buildings are seen at dawn looking across central London towards the Canary Wharf district, London, Britain, February 5, 2020. REUTERS/Toby Melville

Skyscrapers and buildings are seen at dawn looking across central London towards the Canary Wharf district, London, Britain, February 5, 2020. REUTERS/Toby Melville

A wind farm shares space with corn fields the day before the Iowa caucuses, where agriculture and clean energy are key issues, in Latimer, Iowa, U.S. February 2, 2020. REUTERS/Jonathan Ernst

A wind farm shares space with corn fields the day before the Iowa caucuses, where agriculture and clean energy are key issues, in Latimer, Iowa, U.S. February 2, 2020. REUTERS/Jonathan Ernst

The sun is seen rising behind St Paul's cathedral, London, Britain, January 20, 2020. REUTERS/Toby Melville

The London skyline is seen at dawn, London, Britain, January 20, 2020. REUTERS/Toby Melville

The London skyline is seen at dawn, London, Britain, January 20, 2020. REUTERS/Toby Melville

An indigenous man walks as the sun sets during a four-day pow wow in Piaracu village, in Xingu Indigenous Park, near Sao Jose do Xingu, Mato Grosso state, Brazil, January 17, 2020. REUTERS/Ricardo Moraes

Cars are seen in a traffic jam in Rome, December 23, 2019. Picture taken December 23, 2019. REUTERS/Guglielmo Mangiapane

A man walks along the beach in the early morning in Sopot, Poland, January 14, 2020. REUTERS/Kevin Coombs

The errupting Taal Volcano is seen at sunrise in Tagaytay City, Philippines, January 14, 2020. REUTERS/Eloisa Lopez

Electricity pylons are seen near Tagelswangen, Switzerland January 10, 2020. REUTERS/Arnd Wiegmann

Electricity pylons are seen near Tagelswangen, Switzerland January 10, 2020. REUTERS/Arnd Wiegmann

People gather at a deck on the banks of Guaiba River, as a dark horizon caused by smoke from Australia's bush fires is seen, in Porto Alegre, Brazil January 8, 2020. REUTERS/Diego Vara

The White House is seen at sunrise the morning after Iran's missile attacks on U.S.-led forces in Iraq, in Washington, U.S., January 8, 2020. REUTERS/Kevin Lamarque

A surfer wipes out on a wave in Cardiff, California, U.S., January 7, 2020. REUTERS/Mike Blake

A surfer takes some air off a wave while surfing after sunset in Cardiff, California, U.S., January 7, 2020. REUTERS/Mike Blake

A surfer takes some air off a wave while surfing after sunset in Cardiff, California, U.S., January 7, 2020. REUTERS/Mike Blake TPX IMAGES OF THE DAY

A surfer takes some air off a wave while surfing after sunset in Cardiff, California, U.S., January 7, 2020. REUTERS/Mike Blake

A surfer takes some air off a wave in Cardiff, California, U.S., January 7, 2020. REUTERS/Mike Blake

A boy is seen in silhouette as he runs on a beach in Colombo, Sri Lanka January 7, 2020. REUTERS/Dinuka Liyanawatte TPX IMAGES OF THE DAY

Cyclists ride at sunrise in London, Britain, January 4, 2020. REUTERS/Toby Melville

Cyclists ride at sunrise in London, Britain, January 4, 2020. REUTERS/Toby Melville