A protester is taken away by law enforcement officers during a rally held by opposition supporters on the parliamentary election day in Almaty, Kazakhstan on January 10, 2021. Dozens of activists were detained in at least three major cities, including the capital, Nur-Sultan, and Almaty, with reports of independent observers being denied access or detained at some polling stations. (Photo by Petr Trotsenko/Radio Free Europe/Radio Liberty)

Smoke and steam billow from Belchatow Power Station, Europe's largest coal-fired power plant powered by lignite, operated by Polish utility PGE, in Rogowiec, Poland on November 22, 2023. (Photo by Kacper Pempel/Reuters)

Long streams of red-hot lava flow down the southeast crater of Mount Etna, Europe's tallest and most active volcano, seen from Zafferana Etnea, Italy, June 11, 2022. (Photo by Antonio Parrinello/Reuters)

Performers in costume wait to take part in the carnival on the main Parade day of the Notting Hill Carnival in west London on August 29, 2022. London's Notting Hill carnival celebrates Caribbean culture, at a carnival considered the largest street demonstration in Europe. (Photo by Susannah Ireland/AFP Photo)

A view of one of the stands during the inauguration of the Integrated Systems Europe (ISE) fair, the largest audiovisual show in the world, in Barcelona city, Catalonia, north-eastern Spain, 31 January 2023. The event runs until 03 February, gathers 68,000 registered attendees and 1,055 exhibiting companies. (Photo by Quique Garcia/EPA)

A child uses an umbrella to avoid rain falling on a fire at the northern Greek border point of Idomeni, Greece, Monday, April 25, 2016. Many thousands of migrants remain at the Greek border with Macedonia, hoping that the border crossing will reopen, allowing them to move north into central Europe. (Photo by Gregorio Borgia/AP Photo)

Costumed revellers perform in the parade during the Notting Hill Carnival in London, Monday, August 27, 2018. The carnival has been held every year since 1966 and one of the largest festival celebrations of its kind in Europe. (Photo by Tim Ireland/AP Photo)

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)