Paul, 9, dumps a bucket of water over his head at a fountain near government buildings during hot weather on July 1, 2015 in Berlin, Germany. Temperatures across northern Europe are rising and in Germany a high of 36 degrees is forecast for the weekend. (Photo by Sean Gallup/Getty Images)

Balloons are inflated at the Bristol International balloon fiesta in south west England August 6, 2015. Now in its 37th year, the Bristol International Balloon Fiesta is Europe's largest annual hot air balloon event in the city that is seen by many balloonists as the home of modern ballooning. (Photo by Toby Melville/Reuters)

Revellers head out in Leeds city centre, which has one of the country's highest infection rates on October 11, 2020. Cities in northern England and other areas suffering a surge in Covid-19 cases may have pubs and restaurants temporarily closed to combat the spread of the virus. (Photo by NB PRESS LTD/The Sun)

A drone photo shows fall folaige wih tones of yellow, red and brown colors of Uludag Mountain, one of the most significant winter tourism destination of Turkey, on November 29, 2020 in Bursa, Turkey. (Photo by Sergen Sezgin/Anadolu Agency via Getty Images)

Costumed revelers walk through a street prior to the carnival parade in the village of Vevcani, in the southwestern part of North Macedonia, on Wednesday, January 13, 2021. The coronavirus pandemic has disrupted the usual carnival celebrations which have been taken place for centuries in the tiny North Macedonian town of Vevcani. A few hundred locals gathered at the small town square to celebrate the carnival, but police dispersed the gathering after a brief scuffle with a small group. No arrests or injuries were reported. (Photo by Boris Grdanoski/AP Photo)

A Russian Rosguardia (National Guard) soldier stands at a central avenue in front of a restaurant promoter, a day before Sunday's protest in St. Petersburg, Russia, Saturday, January 30, 2021. (Photo by Dmitri Lovetsky/AP Photo)

A Hindu devotee bathes in the Shali River during the Swasthani Brata Katha festival, marked with auspicious bathing in water bodies hoping for a prosperous life and conjugal happiness, on the outskirts of Kathmandu on January 28, 2021. (Photo by Prakash Mathema/AFP Photo)

Katy Perry poses backstage during rehearsals for the 2017 MTV Video Music Awards at The Forum on August 25, 2017 in Inglewood, California. (Photo by John Shearer/Getty Images for MTV)