Members of the special operations team conduct a building climbing training in Qinzhou, south China's Guangxi Zhuang Autonomous Region, April 13, 2021. (Photo credit should read Costfoto/Barcroft Media via Getty Images)

The rusty emblem of the Soviet Union is seen over the ghost town of Pripyat close to the Chernobyl nuclear plant, Ukraine, Thursday, April 15, 2021. The vast and empty Chernobyl Exclusion Zone around the site of the world’s worst nuclear accident is a baleful monument to human mistakes. Yet 35 years after a power plant reactor exploded, Ukrainians also look to it for inspiration, solace and income. (Photo by Efrem Lukatsky/AP Photo)

Britain's Catherine, Duchess of Cambridge plays a stroke of golf during a visit to meet young people supported by the Cheesy Waffles Project, a charity for children, young people and adults with additional needs across County Durham, at the Belmont Community Centre, in Durham, north east England on April 27, 2021. (Photo by Andy Commins/Pool via AFP Photo)

The galactic centre of the Milky Way glows brightly in the clear night sky above the lighthouse at Portland Bill on the Dorset Jurassic Coast, United Kingdom on April 13, 2021. (Photo by Graham Hunt/Alamy Live News)

A tiger plays in water at a tiger zoo in Chaing Mai, Thailand on March 31, 2021. (Photo by Soe Zeya Tun/Reuters)

A man walks past a mural depicting US actors John Travolta and Samuel L. Jackson holding thermometers instead of guns amid the Covid-19 pandemic, in Tel Aviv on March 1, 2021. (Photo by Emmanuel Dunand/AFP Photo)

Visitors look at photographs in the exhibition “Lisette Model Street Life e Horst P. Horst Syle and Glamour” at the art gallery “Camera – Centro Italiano per la fotografia” in Turin, Italy, 27 April 2021. Culture venues reopened to the public as several Italian region are back to COVID-19 yellow zone in the country's tier system. (Photo by Alessandro di Marco/EPA/EFE)

A Palestinian man bathes his camel in the sea during a dust storm in Gaza City on March 23, 2021. (Photo by Mohammed Abed/AFP Photo)