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)

A woman cools off at a fountain in central Cordoba, southern Spain, 11 August 2021. Andalucia was put on orange alert for high temperatures, with a new heatwave forecast to reach temperatures of over 41 degrees Celsius in the region. (Photo by Salas/EPA/EFE)

A fisherman throws his net beside a half-submerged M/V Palawan Pearl after it collided with a Cyprus-flagged BKM 104 dredger in Manila bay, Philippines on Thursday, July 8, 2021. A Philippine cargo vessel and a Cyprus-flagged dredger collided in a Manila Bay anchorage area early Thursday, resulting in no injuries but causing the cargo vessel to list and lie half-submerged in the busy waters. (Photo by Aaron Favila/AP Photo)

People watch plumes of smoke and ash rise from as Taal Volcano erupts Sunday January 12, 2020, in Tagaytay, Cavite province, outside Manila, Philippines. (Photo by Aaron Favila/AP Photo)

Natalia Williams dressed as Corpse Bride Emily and Tony Knight as a Mandalorian, arrive at the Bradford Unleashed Comic-Con, an entertainment and comic book convention in England on March 8, 2020. (Photo by Danny Lawson/PA Images via Getty Images)

Indian people bang utensils and clap from the balconies of a residential building in Mumbai, India, 22 March 2020. Prime Minister Narendra Modi asks citizens to impose self-curfew to fight Coronavirus COVID-19 and also ask them to clap, bang the bells and utensils at 5pm Indian time to mark of respect and to thank the medical staff and others working 24 hours, during Covid-19 outbreak to keeping the Indians safe. (Photo by Divyakant Solanki/EPA/EFE)

Pedestrians cross a road in Cape Town, South Africa Saturday, March 28, 2020, as South Africa went into a nationwide lockdown for 21 days in an effort to control the spread of the coronavirus. (Photo by Nardus Engelbrecht/AP Photo)

A Palestinian man waves from his home as a clown and a man in a costume perform to entertain people amid concerns about the spread of the coronavirus disease (COVID-19), in Khan Younis in the southern Gaza Strip on April 19, 2020. (Photo by Ibraheem Abu Mustafa/Reuters)