A couple walk in the Retiro park in Madrid on November 17, 2020 as a thick fog falls on the Spanish capital. (Photo by Gabriel Bouys/AFP Photo)

A girl plays at the West Side Hallo Fest, a Halloween festival in Bucharest, Romania, Friday, October 27, 2023. Tens of thousands streamed last weekend to Bucharest's Angels' Island peninsula for what was the biggest Halloween festival in the Eastern European nation since the fall of Communism. (Photo by Vadim Ghirda/AP Photo)

Buildings in Lujiazui financial district are seen shrouded in fog amid an orange alert for heavy fog in Shanghai, China on January 31, 2024. (Photo by Xihao Jiang/Reuters)

Janja Garnbret of Slovenia competes during the women's boulder qualification of the IFSC World Cup Innsbruck 2024 on June 26, 2024 in Innsbruck, Austria. (Photo by Marco Kost/Getty Images)

Torchbearers Charles Antoine Kouakou, Fabien Lamirault, Elodie Lorandi, Nantenin Keita and Alexis Hanquinquant gesture after lighting the Cauldron to conclude the opening ceremony of the Paris 2024 Summer Paralympic Games at Place de la Concorde on August 28, 2024 in Paris, France. (Photo by David Ramos/Getty Images)

A boy looks at a six-metre tall luminescent puppet, operated by ten performers, during a preview of Vivid Sydney, promoted as the world's largest festival of light, music and ideas, in Sydney, Australia on May 23, 2018. “Vivid” is a major outdoor cultural event featuring light installations and projections with the annual event this year running from May 25 to June 16, 2018. (Photo by David Gray/Reuters)

“A dazzling exhibition featuring jewelry made with the world’s largest diamond will be part of the celebrations marking the 60th anniversary of Queen Elizabeth II’s reign. The jewelry was made with a 3,106-carat diamond discovered in 1905 at the Cullinan Diamond Mine near Pretoria, the capital of South Africa. The diamond was so large that miners initially thought it was a worthless crystal and almost threw it away”... – Vidya Kauri via News.nationalpost.com

Photo: Caroline de Guitaut, Curator of Royal Collections, holds the Cullinan III and IV Broach and the Cullinan VII Delhi Durbar Necklace and Cullinan Pendant at The Queen's Gallery, Buckingham Palace on May 15, 2012 in London, England. (Photo by Peter Macdiarmid)

A protester uses molotov cocktails against riot police during May Day protests on May 1, 2010 in Athens, Greece. (Photo by Milos Bicanski /Getty Images)