The tusk of a woolly mammoth that lived some 18,000 years ago, from which researchers sequenced the extinct mammal's entire genome, is seen in northeastern Siberia in this photo from 2015. (Photo by Love Dalen/Handout via Reuters)
Early morning swimmers at Cullercoats Bay on the north east coast of England on Sunday, December 29, 2024. (Photo by Owen Humphreys/PA Images via Getty Images)
Two young women jump into a pool on the beach on June 20, 2025 in Margate, United Kingdom. Yellow heat health alerts have been issued by the Met Office with temperatures set to climb as high as 33°C by the weekend. (Photo by Leon Neal/Getty Images)
Armed Syrian Turkmen villagers are seen near the northern Syrian village of Yamadi, near the Turkish-Syrian border, Syria, November 24, 2015. Turkey shot down a Russian warplane near the Syrian border on Tuesday saying it had repeatedly violated its air space, one of the most serious publicly acknowledged clashes between a NATO member country and Russia for half a century. (Photo by Reuters/Stringer)
Willow O'Brien, 5, holds an Irish flag as she poses for pictures, amid the outbreak of the coronavirus disease (COVID-19), on Saint Patrick's Day in Dublin, Ireland, March 17, 2021. (Photo by Clodagh Kilcoyne/Reuters)
Russian Boxing Federation lifts a portrait of late Soviet leader Joseph Stalin with a hot air balloon, close to city of Belogorsk outside Simferopol, Crimea, on May 11, 2020, to mark the 75th anniversary of the end of World War II also called the Great Patriotic War, amid the coronavirus (COVID) pandemic. (Photo by AFP Photo/Stringer)
The endangered kea is the world’s only alpine parrot, and one of the most intelligent birds. They show no fear of humans and are thieves and pranksters. The parrot is seen in the Whakaari conservation area, near Glen Orchy in the Otago region of New Zealand, a place where historic huts and mining relics are surrounded by stunning mountains covered in tussock. (Photo by Murdo MacLeod/The Guardian)