Participants jump into the water during the 114th edition of the Copa Nadal (Christmas Cup) swimming race in Barcelona's Port Vell on December 25, 2023. The traditional 200-meter Christmas swimming race gathered around 300 participants on Barcelona's Port Vell (old harbour). (Photo by Josep Lago/AFP Photo)

Guests attend the Haute Couture Spring-Summer 2024 collection show for Giorgio Armani Prive by designer Giorgio Armani in Paris, France, on January 23, 2024. (Photo by Benoit Tessier/Reuters)

A juvenile blackcap is recorded in the soft light of morning at Minorca, UK, a former open-cast mine near Moira in the National Forest on June 18, 2025. Dr Heather Gilbert, research and evidence manager, checks mist nets among wildflowers and young trees as part of long-term monitoring that shows bird numbers have increased by 48 per cent over 30 years. (Photo by Rod Kirkpatrick/RKP Photography)

In this photo provided by Sugar Bowl Resort, snow covers the door of the marketing office at the Sugar Bowl Resort in Norden, Calif., on Monday, March 4, 2024. A powerful blizzard dumped more than 10 feet of snow on the California ski resort, where the marketing team had to dig a tunnel to get to their office door. The storm closed highways and most lifts at ski resorts over the weekend. (Photo by Jacob Banta/Sugar Bowl Resort via AP Photo)

On the afternoon of the January 3, 2025, seagulls are gathering around a child holding shrimp crackers at Haeundae Beach in Busan, South Korea. (Photo by Dong-Hwan Kim)

Jasmine Paolini hits a forehand during her first-round US Open match on Sunday, August 24, 2025 at USTA Billie Jean King National Tennis Center in the Flushing neighborhood of the Queens borough of New York City. (Photo by Ray Giubilo)

“Contrails (short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals”. – Wikipedia

Photo: An airplane leaves a vapor trail as it flies in front of he moon on January 17, 2007 above Hanover, Germany. (Photo by Alexander Hassenstein/Getty Images)

A jockey takes part in a traditional cattle race or “Pacu Jawi”, to mark the end of the rice harvest in Tanah Datar, West Sumatra, Indonesia, August 13, 2016 in this photo taken by Antara Foto. (Photo by Hafiz Mubarak A./Reuters/Antara Foto)