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)

People stroll alongside one of the hills of the Tio Pio park in Madrid, Monday, January 25, 2016. The park is a high viewpoint frequented mostly by locals due to its view of the Spanish capital skyline. (Photo by Francisco Seco/AP Photo)

Steam comes out of the chimneys of the coal-fired power station Neurath near the Garzweiler open-cast coal mine in Luetzerath, Germany, Monday, October 25, 2021. The climate change conference COP26 will start next Sunday in Glasgow, Scotland. (Photo by Michael Probst/AP Photo)

The Royal Castle is seen a veil of heavy winter smog in Budapest, Hungary on January 30, 2017. (Photo by Laszlo Balogh/Reuters)

A woman plays on a swing on the beach in Santa Monica, Calif., Wednesday, June 22, 2022. (Photo by Jae C. Hong/AP Photo)

Fans watch during a match between Daria Kasatkina, of Russia, and Coco Gauff during round-robin play on day four of the WTA Finals tennis tournament in Fort Worth, Texas, Thursday, November 3, 2022. (Photo by Ron Jenkins/AP 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)