A girl cools off from the heat in water from an open fire hydrant in the Washington Heights section of upper Manhattan in New York City, New York, U.S., July 19, 2019. (Photo by Mike Segar/Reuters)

Protesters begin to gather ahead of the UK Student Climate Network's Global Climate Strike at Millbank in London, England on September 20, 2019. (Photo by Gareth Fuller/PA Images via Getty Images)

A child is seen during celebrations of Reindeer Breeder Day, the main holiday of indigenous peoples of the Russian Extreme North, in the village of Nosok on Taymyr Peninsula in north-central Siberia, Krasnoyarsk Territory, Russia on April 17, 2021. (Photo by Alexander Ryumin/TASS)

Spot, a robot with dog-like movements, walks past a dog in Cathedral Square in Erfurt, Germany on April 20, 2021. Security service provider Ciborius, a provider of robotic security solutions with artificial intelligence, presented its artificial employee with high-resolution 360-degree all-round camera, ultra-bright LED light and a light detection system on Domplatz. (Photo by Michael Reichel/dpa)

Flower garlands, fruits and a pair of sandals of a woman who died from the coronavirus disease (COVID-19), are placed by her relatives on the spot where she was cremated, as part of a ritual at a crematorium in New Delhi, India, April 30, 2021. (Photo by Adnan Abidi/Reuters)

American singer and songwriter Ava Max gestures as she arrives at the 2021 iHeartRadio Music Awards at Dolby Theatre in Los Angeles, California, U.S., May 27, 2021. (Photo by Mario Anzuoni/Reuters)

Firls attend Sunday Mass at Sacre-Coeur church, in Port-au-Prince, Sunday, July 11, 2021, four days after President Jovenel Moise was assassinated in his home. (Photo by Joseph Odelyn/AP Photo)

Revellers in Leeds, United Kingdom were excited to be out and about again on July 18, 2021. At a minute past midnight, England dropped most of its remaining Covid-19 social restrictions, such as those requiring indoor mask-wearing and limits on group gatherings. These changes come despite rising infections, pitting the country's vaccination programme against the virus's more contagious Delta variant. (Photo by Ioannis Alexopoulos/PA Wire Press Association via Getty Images)