British Prime Minister Boris Johnson visits the Pavegen stand, a company that converts footsteps into energy, at the Innovation Zone during the UK-Africa Investment Summit in London, Britain on January 20, 2020. (Photo by Leon Neal/Pool via Reuters)

A girl from Newar community is pictured with vermillion powder on her forehead as she takes part at the Ihi ceremony in Bhaktapur, Nepal on December 6, 2019. The two-day ceremony begins with purification rituals and ends with “Kanyadan” (giving away the virgin) of the girl by her father. A Newari girl gets married thrice in her life, first with Bel, the fruit of a wood-apple tree, secondly with the sun, and lastly with her future husband. (Photo by Monika Deupala/Reuters)

A man wearing a traditional Russian costume holds a goose after a traditional goose fight during celebrations of Maslenitsa, also known as Pancake Week, which is a pagan holiday marking the end of winter, in Suzdal, Russia on February 29, 2020. (Photo by Maxim Shemetov/Reuters)

A couple wearing face masks rides a bicycle at a park in Seoul, South Korea, Saturday, March 7, 2020. The number of infections of the COVID-19 disease spread around the globe. (Photo by Ahn Young-joon/AP Photo)

People take photos of hotel room lights shaping the word “Zero”, referring to Covid-19 cases, in Taipei, Taiwan, 17 April 2020. According to news reports Taiwan records no new COVID-19 cases for third time this week. Medical experts are rushing to develop a vaccine for the COVID-19 disease caused by the SARS-CoV-2 coronavirus and advising people to practice social distancing and proper hygiene. (Photo by David Chang/EPA/EFE/Rex Features/Shutterstock)

A four-legged robot dog called SPOT patrols a park as it undergoes testing to be deployed as a safe distancing ambassador, following the coronavirus disease (COVID-19) outbreak, in Singapore on May 8, 2020. (Photo by Edgar Su/Reuters)

A police officer holds a pistol during clashes with protesters near a burning tyre barricade in the Kariobangi slum of Nairobi, Kenya Friday, May 8, 2020. Hundreds of protesters blocked one of the capital's major highways with burning tires to protest government demolitions of the homes of more than 7,000 people and the closure of a major food market, causing many to sleep out in the rain and cold because of restrictions on movement due to the coronavirus. (Photo by Brian Inganga/AP Photo)

Customers play with cats to find comfort at the Caturday Cat cafe after the government started opening some restaurants outside shopping malls, parks and barbershops, during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand on May 7, 2020. (Photo by Juarawee Kittisilpa/Reuters)