Aerial view of flower fields near the Keukenhof park, also known as the Garden of Europe, in Lisse April 9, 2014. Keukenhof, employing some 30 gardeners, is considered to be the world's largest flower garden displaying millions of flowers every year. (Photo by Yves Herman/Reuters)

A worker walks through a salt pan on the eve of May Day or Labour Day on the outskirts of the southern Indian city of Chennai April 30, 2014. India is the third largest salt producing country in the world after China and U.S. with global annual production about 230 million tonnes, according to government data. (Photo by Reuters/Babu)

Ingots of 99.99 percent pure silver are cast at the Krastsvetmet Krasnoyarsk non-ferrous metals plant in the Siberian city of Krasnoyarsk, Russia, June 5, 2015. Krastsvetmet is one of the world's largest players in the precious metals industry. REUTERS/Ilya Naymushin

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)

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)

The body of an unidentified man lies on a road barrier near a village recently retaken by Ukrainian forces on the outskirts of Kharkiv, Ukraine, Saturday, April 30, 2022. Ukraine's second-largest city, has been under sustained Russian attack since the beginning of the war in late February. (Photo by Felipe Dana/AP Photo)

View of an oil-stained bird on the shore of a contaminated lake in Maracaibo, Venezuela on June 22, 2023. The Azul Ambientalistas foundation denounced on 22 June the “state of emergency” in which the Maracaibo Lake, the largest in Venezuela, finds itself, due to oil spills that, it assured, are affecting the lake economy and the health of the people. (Photo by Henry Chirinos/EPA)