Tigray refugees who fled the conflict in the Ethiopia's Tigray arrive with their donkey on the banks of the Tekeze River on the Sudan-Ethiopia border, in Hamdayet, eastern Sudan, Saturday, November 21, 2020. (Photo by Nariman El-Mofty/AP Photo)

A robot used to assist Covid-19 patients is seen in an elevator on December 5, 2020 in New Delhi, India. The “Mitra” robot can connect patients with their loved ones, and can assist healthcare workers on the frontlines of the pandemic by minimisng the risk of infections caused by close contact. The Yatharth Hospital, which is treating Covid-19 patients in Noida, on the outskirts of New Delhi, is one of a handful of hospitals in India that has started to use robots. (Photo by Anindito Mukherjee/Getty Images)

A weather vane on a farm building close to the HS2 line on November 24, 2020 in Great Missenden, England. HS2 protesters continue to occupy key infrastructure sites along the proposed HS2 route claiming that the project is “the most carbon-intensive and environmentally destructive project in UK history”. (Photo by Jim Dyson/Getty Images)

A vendor sells fish at Central Market in freezing conditions of minus 43 degrees Celsius in the city of Yakutsk, Sakha (Yakutia), Russia on December 13, 2020. The winters in Yakutsk are extremely cold and long and the summers short and warm, with temperatures sometimes rising above 30C. (Photo by Yevgeny Sofroneyev/TASS)

A woman walks past a mural amid the outbreak of the coronavirus disease (COVID-19) in Manchester, Britain, January 4, 2021. (Photo by Phil Noble/Reuters)

Students on their way home from school play in a river which has risen due to recent seasonal rains, in a remote village in Panca, Aceh province on January 22, 2021. (Photo by Chaideer Mahyuddin/AFP Photo)

A mural painted on a fence depicts US President Donald Trump as the Coronavirus in San Francisco, California on April, 01, 2020. All 40 million residents of California were Thursday ordered to stay at home indefinitely in a bid to battle the coronavirus pandemic in the nation's most populous state. (Photo by Josh Edelson/AFP Photo)

A train attendant wearing a protective face mask stands on a train to Wuhan, at the railway station in Beijing, China, 29 March 2020. Wuhan, the epicenter of the coronavirus outbreak, partly lifted the lockdown allowing people to enter the city after more than two months. Chinese authorities eased the quarantine measures as cases of Covid-19 across China have plummeted, according to Chinese government figures. (Photo by Roman Pilipey/EPA/EFE)