Engine driver Josef Kowatsch (top L) steers a train through the NEAT Gotthard Base Tunnel during a media visit near the town of Erstfeld August 24, 2015. Crossing the Alps, the world's longest train tunnel should become operational at the end of 2016, consisting of two parallel single track tunnels, each of a length of 57 km (35 miles). (Photo by Arnd Wiegmann/Reuters)

Revellers enjoy a night out in central Liverpool, northwest England, on December 30, 2020 before hightened Tier 3 restrictions closing hospitality venues, and bars indoor and outdoor socialising between households are imposed in the city amid surging cases of the novel coronavirus. (Photo by Oli Scarff/AFP Photo)

This dyed straw is grown in Ban Dong Saen Suk, Sakon Nakhon province, Thailand on September 28, 2021. Sarawut Intharap, 38, an engineer who capture the image, said: “The straw is entwined together to make mats used for sleeping and eating and they are sold at around £2.50 (3.40 USD) a mat at the local market”. (Photo by Sarawut Intarob/Solent News)

Children give “high-fives” as London Marathon runners pass down Deptford’s Evelyn Street, the eight-mile mark of the 26.2 mile course in London, England on Sunday, October 2, 2022. (Photo by Guy Corbishley/Alamy Live News)

A boy holds a green sea turtle hatchling before releasing it at Pekan Bada beach on the outskirts of Banda Aceh on March 14, 2023. (Photo by Chaideer Mahyuddin/AFP Photo)

Snow blows off the Svalbard Global Seed Vault before being inaugurated at sunrise, Tuesday, February 26, 2008. (Photo by John McConnico/AP Photo)

A pro-Russian activist aims a pistol at supporters of the Kiev government during clashes in the streets of Odessa May 2, 2014. Police said a man was shot dead in clashes between a crowd backing Kiev and pro-Russian activists in the largely Russian-speaking southern port of Odessa, which lies west of Crimea, annexed by Moscow in March. (Photo by Yevgeny Volokin/Reuters)

A woman reacts as she uses a selfie stick to take a photo of herself at Tiananmen Square in Beijing, China, Thursday, April 30, 2015. Selfie sticks are gaining popular in China, and many people are using them at popular tourist destinations. (Photo by Andy Wong/AP Photo)