A mother bear takes a dip in the water to cool off in the warm summer sun but refuses to leave her three youngsters behind – so they climb aboard her back. (Photo by Jon Langeland/Solent News & Photo Agency)

Against the scorching sun, a hungry jackal chases a flock of birds looking for a quick morning snack. Taken in South Africa's Kgalagadi Transfrontier National Park, these images capture the moment a lone hunter tries, and then succeeds, in his pursuit. (Photo by John Mullineux/Solent News)

A woman enjoys the sun at Plaka beach on the Aegean island of Naxos, Greece, Friday, May 14, 2021. Greece launched its tourism season Friday amid a competitive scramble across the Mediterranean to lure vacationers emerging from lockdowns. (Photo by Thanassis Stavrakis/AP Photo)

A devotee offers prayers to Sun God while standing inside an artificial pond near the banks of river Yamuna on the occasion of the Hindu festival of “Chhath Puja” in New Delhi on October 30, 2022. (Photo by Sajjad Hussain/AFP Photo)

A woman takes pictures as she stands on the top of a Greek Orthodox Church while the sun sets in the Aegean Sea, in Santorini, Greece's Cyclades island, on Wednesday, June 15, 2022. (Photo by Petros Giannakouris/AP Photo)

The Soulton Long Barrow in Shropshire, UK on January 5, 2025. The main chamber is aligned so that at winter solstice and for a few weeks after, the sun sets directly through the stained glass door, resulting in a beautifuil rainbow of light to flood through the chamber. (Photo by Andrew Fusek Peters/South West News Service)

A Aldabra Tortoise receives a Christmas treat at Taronga Zoo on December 14, 2012 in Sydney, Australia. Taronga Zoo celebrated Christmas early giving Christmas-themed environmental activities to the Zoo's Giraffes, Sun Bears, Meerkats, Aldabra Tortoise and Cockatoos providing a wonderful natural display for Zoo visitors. (Photo by Lisa Maree Williams)

Young children at a Bristol, Great Britain health centre unsure of the benefits of sun-lamps and the special glasses that must be worn, July 1948. The health centre was part of the newly introduced free National Health Service. (Photo by Popperfoto/Getty Images)