Radhika Khandelwal, a chef and an owner of a restaurant, prepares food at her home for her food lovers, after her restaurent was closed due to a 21-day nationwide lockdown to slow the spreading of the coronavirus disease (COVID-19), in New Delhi, India, April 13, 2020. REUTERS/Adnan Abidi

Archaelogists work on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

An archaeologist works on a mosaic in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

Archaeologists work on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

Archaeologists work on a fresco in the House of Lovers "Casa degli Amanti",one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

An archaelogist works on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

An archaelogist works on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

An archaelogist works on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

An archaelogist works on a fresco in the House of Lovers "Casa degli Amanti", one of three restored domus (ancient houses) reopened to the public at the archaeological site of Pompeii, Italy, February 18, 2020. REUTERS/Ciro De Luca

Nashua City Clerk Susan Lovering looks inside one of the supply totes for election precinct moderators lined up and ready for dispatch to voting locations as her staff process absentee ballots for the February 11 New Hampshire presidential primary election in Nashua, New Hampshire, U.S. February 10, 2020. REUTERS/Jim Bourg

Front-line protesters Wing, 18, and Tony, 18, are seen during a protest in Hong Kong, January 1, 2020. REUTERS/Jessie Pang

Front-line protesters Wing, 18, and Tony, 18, are seen during a protest in Hong Kong, January 1, 2020. REUTERS/Jessie Pang

Front-line protesters Wing, 18, and Tony, 18, pose for a portrait in Hong Kong, December 9, 2019. The two began dating after attending many protests together. REUTERS/Leah Millis

Frontline protesters Tony, 18, and Wing, 18, hold hands during a protest in Hong Kong on January 1, 2020. REUTERS/Jessie Pang

Two frontline lovers in full body gear hug each other in the besieged Hong Kong Polytechnic University (PolyU) campus that had been on lockdown for a week in Hong Kong, China on November 18, 2019. Picture taken November 18, 2019. REUTERS/Jessie Pang

The website of the charity lottery to win the painting "Nature Morte, 1921" by Spanish painter Pablo Picasso is seen at the Picasso Museum in Paris, France, December 18, 2019. A charity lottery offers the chance to win the Picasso oil painting for 100 euros and the prize winner will be announced in an official draw at Christie's Paris on January 6, 2020. Picture taken December 18, 2019. REUTERS/Gonzalo Fuentes

Clouds gather but produce no rain as cracks are seen in the dried up municipal dam in drought-stricken Graaff-Reinet, South Africa, November 14, 2019. Picture taken November 14, 2019. REUTERS/Mike Hutchings

2019 American Music Awards - Show - Los Angeles, California, U.S., November 24, 2019 - Taylor Swift accepts the the Favorite Album Pop/Rock award for "Lover." REUTERS/Mario Anzuoni

2019 American Music Awards - Show - Los Angeles, California, U.S., November 24, 2019 - Taylor Swift accepts the the Favorite Album Pop/Rock award for "Lover." REUTERS/Mario Anzuoni

2019 American Music Awards - Show - Los Angeles, California, U.S., November 24, 2019 - Heidi Klum (L) presents Taylor Swift with the Favorite Album Pop/Rock award for "Lover." REUTERS/Mario Anzuoni

Autumn colours are seen on foliage during foggy autumn day in Minsk, Belarus November 19, 2019. REUTERS/Vasily Fedosenko

Nov 14, 2019; Cleveland, OH, USA; Cleveland Cavaliers forward Kevin Lover (0) loses the ball under pressure from Miami Heat forward Jimmy Butler (22) during the third quarter at Rocket Mortgage FieldHouse. Mandatory Credit: Philip G. Pavely-USA TODAY Sports

Nov 14, 2019; Cleveland, OH, USA; Cleveland Cavaliers forward Kevin Lover (0) loses the ball under pressure from Miami Heat forward Jimmy Butler (22) during the third quarter at Rocket Mortgage FieldHouse. Mandatory Credit: Philip G. Pavely-USA TODAY Sports

Cars move through snow covered fields, on a road leading in Oberwarngau, near Munich, Germany November 14, 2019. REUTERS/Andreas Gebert

Deer lock antlers as they clash during the rutting season in Richmond Park, west London, Britain, November 12, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY

People ride on horses in front of the snow-covered mountains in the central Swiss Alps near Studen, Switzerland November 9, 2019. REUTERS/Arnd Wiegmann

A two and half month-old lion cub leans on his mother, inside their enclosure at the Zoo in Peshawar, Pakistan October 18, 2019. REUTERS/Fayaz Aziz

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

An art lover takes a closer look at 'The Creator' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

Art lovers take a closer look at 'The Creator' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

An art lover walks in front of 'Radical Balance' (L) and 'Martyr' by Damien Hirst during an exhibition of his new work entitled "Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

Art lovers take a closer look at 'Obscuritas' and 'Deity' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

Art lovers take a closer look at 'Obscuritas' and 'Deity' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

An art lover stands in front of 'Cardinal' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

An art lover stands in front of 'Deity' by Damien Hirst during an exhibition of his new work entitled 'Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

An art lover stands in front of 'Cardinal' by Damien Hirst during an exhibition of his new work entitled "Mandalas' at the White Cube in London, Britain, September 19, 2019. REUTERS/Dylan Martinez

A zebra rubs its head against another at London Zoo, London, Britain, August 22, 2019. REUTERS/Toby Melville

People watch on top of the Drachenberg hill power-generating windmill turbines during sunset in Berlin, Germany, August 19, 2019. REUTERS/Fabrizio Bensch

Aldabra giant tortoises eat carrots at the La Vanille Nature Park in Riviere des Anguilles, Mauritius, August 19, 2019. REUTERS/Benoit Tessier

An Aldabra giant tortoise looks at visitors at the La Vanille Nature Park in Riviere des Anguilles, Mauritius, August 19, 2019. REUTERS/Benoit Tessier

Aldabra giant tortoises are pictured at the La Vanille Nature Park in Riviere des Anguilles, Mauritius, August 19, 2019. REUTERS/Benoit Tessier

Two Aldabra giant tortoises mate at the La Vanille Nature Park in Riviere des Anguilles, Mauritius, August 19, 2019. REUTERS/Benoit Tessier

Two Mexican hyena cubs are seen during a media tour in Chapultepec Zoo in Mexico City, Mexico July 25, 2019. REUTERS/Edgard Garrido

Two Mexican hyena cubs are seen during a media tour in Chapultepec Zoo in Mexico City, Mexico July 25, 2019. REUTERS/Edgard Garrido

Two Mexican hyena cubs are seen during a media tour in Chapultepec Zoo in Mexico City, Mexico July 25, 2019. REUTERS/Edgard Garrido

People protect themselves from the sun with parasols while rowing in Central Park as a heatwave continues to affect the region in New York, U.S., July 21, 2019. REUTERS/Andrew Kelly

Llamas are seen at Santiago de Machaca, Bolivia, near the border with Peru, July 20, 2019. REUTERS/David Mercado

Atlantic Puffins are seen among the daisies on Skomer Island, Pembrokeshire, Wales, Britain July 16, 2019. Picture taken July 16, 2019. REUTERS/Rebecca Naden

Birds splash in a fountain on the Rose Kennedy Greenway on the first day of a forecasted summer heatwave in Boston, Massachusetts, U.S., July 19, 2019. REUTERS/Brian Snyder

Siberian tigers bathe in a pool to cool down at Al Zawra zoo in Baghdad, Iraq, June 29, 2019. Picture taken June 29, 2019. REUTERS/Thaier al-Sudani

People enjoy a walk on the Mount Hymettus in Athens, Greece, June 20, 2019. REUTERS/Alkis Konstantinidis

A baby hippo stands in water near its mother Mona at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

A baby hippo swims in a pond near its mother Mona at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

Greyhounds compete during an annual international dog race in Gelsenkirchen, Germany, June 9, 2019. REUTERS/Thilo Schmuelgen TPX IMAGES OF THE DAY

Dogs compete during an annual international dog race in Gelsenkirchen, Germany, June 9, 2019. REUTERS/Thilo Schmuelgen

Dogs compete during an annual international dog race in Gelsenkirchen, Germany, June 9, 2019. REUTERS/Thilo Schmuelgen

A couple walk in the Baltic Sea during sunset in Komarovo outside Saint Petersburg, Russia June 8, 2019. Picture taken June 8, 2019. REUTERS/ Maxim Shemetov

Polar bears are reflected in a pool inside an enclosure at the Moscow Zoo on a hot summer day in the capital Moscow, Russia June 7, 2019. REUTERS/Tatyana Makeyeva