Nursery plants are seen placed in people's seats during a rehearsal as Barcelona's Gran Teatre del Liceu opera reopens its doors with a concert for plants, to raise awareness about the importance of an audience after the coronavirus lockdown, in Barcelona, Spain on June 22, 2020. The Gran Teatre del Liceu reopens its doors, in which the 2,292 seats of the auditorium will be occupied on this occasion by plants. It will be on 22 June, broadcast live online, when the UceLi Quartet string quartet performs Puccini's “Crisantemi” for this verdant public, brought in from local nurseries. (Photo by Nacho Doce/Reuters)

A Sri Lankan man use a scarf as a protective mask as he waits for a swab test at a locked-down area in Colombo, Sri Lanka, 14 May 2020. The Sri Lankan government has started lifting most of the restrictions implemented nearly two months ago in a bid to slow down the spread of the SARS-CoV-2 coronavirus causing the COVID-19 disease and is preparing for a full reopening of businesses and a resumption of activities to avoid an economic slump. (Photo by Chamila Karunarathne/EPA/EFE/Rex Features/Shutterstock)

Kelsey Smith of New Zealand gets her stick caught on the shorts of Hollie Pearne-Webb of England during Women's Semi Final Hockey match between England and New Zealand on day eight of the Gold Coast 2018 Commonwealth Games at Gold Coast Hockey Centre on April 12, 2018 on the Gold Coast, Australia. (Photo by Matt King/Getty Images)

An Indian visitor sits on a bike with the wax statue of American actor Tom Cruise at the Madame Tussauds Delhi in New Delhi, India on June 6, 2018. (Photo by Money Sharma/AFP Photo)

Cast member Bryce Dallas Howard poses at the premiere of the movie “Jurassic World: Fallen Kingdom” at Walt Disney Concert Hall in Los Angeles, California, U.S., June 12, 2018. (Photo by Mario Anzuoni/Reuters)

Ministry of Defence handout photo of Chinooks from RAF Odiham as they take part in the Royal Air Force flypast over central London to mark the centenary of the RAF on Tuesday, July 10, 2018. (Photo by SAC Pippa Fowles (RAF)/PA Wire)

Kashmiri villagers inspecting a house damaged in a gun battle flee from it after hearing rumors of Indian army soldiers returning back to the site, which turned out to be false, in Kundalan village, some 60 Kilometres south of Srinagar, Indian controlled Kashmir, Tuesday, July 10, 2018. Government forces fired at protesters Tuesday in Indian-controlled Kashmir, killing a teenage boy and wounding at least 120 more who had been trying to reach the site of a gunbattle in which soldiers killed two rebels, police and residents said. (Photo by Dar Yasin/AP Photo)

People gather on a hill near the Chopin Airport to watch aeroplanes taking off, in Warsaw, Poland, Sunday, September 9, 2018. (Photo by Alik Keplicz/AP Photo)