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)

A person looks up at the Aurora Australis in Judbury in the Huon Valley, Tasmania on April 24, 2023. (Photo by Toby Schrapel freelance photography/The Guardian)

A picture taken with a drone shows a painting made of flowers, titled “Summer Flower Bed”, by the artist Elita Patmalniece at Kronvalda park in Riga, Latvia, 19 July 2023. (Photo by Toms Kalnins/EPA)

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)

Uzbekistan's Javokhir Sindarov in action against Hans Niemann of the U.S. during the Diving Chess Competition in Cape Town, South Africa, on December 4, 2025. (Photo by Esa Alexander/Reuters)

A girl and boy carry a basket of fish in Kyaukpyu township, Rakhine state, Myanmar October 6, 2015. (Photo by Soe Zeya Tun/Reuters)

Opossums on their mothers back at a game reserve in Central Minnesota, USA, on September 2, 2013. (Photo by Caters News Agency)

People participate in a winter fishing event in Changchun, Jilin province, China, December 25, 2016. Picture taken December 25, 2016. (Photo by Reuters/Stringer)