Migrating starlings fly in formation near the southern Israeli town of Rahat February 2, 2015. The phenomenon, known as murmuration, is most common during the winter months. (Photo by Nir Elias/Reuters)

Junior Lambrechts has his face painted in preparation for the Cape Minstrel Carnival in Cape Town, South Africa on January 2, 2023. (Photo by Shelley Christians/Reuters)

The Belgian rider Wout van Aert crashes during an ascent on the 11th stage of the Tour de France in Col de Néronne, France on July 10, 2024. (Photo by Anne-Christine Poujoulat/AFP Photo)

Four-year-old Etta Syrett relaxes on one of two giant pumpkins at Pinetops Nurseries in Lymington, UK on September 22, 2025, affectionately named “Dumbledore” and ”Muggle”. Grown by twins Ian and Stuart Paton, each weighs an estimated 1,179 kg (2,600 lbs). The 64-year-old brothers were inspired by Hagrid’s pumpkin patch in Harry Potter and hope to break the world record. (Photo by Ollie Thompson/Solent News & Photo Agency)

These little grizzly bear cubs had fun making a real splash when their mum took them for a dip to learn how to fish. Kamchatka, Russia. (Photo by Marco Mattiussi/Solent News & Photo Agency)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.

Sailors stand on the deck as the USS New York as it passes the Statue of Liberty during the start of Fleet Week May 25, 2011 in New York City. Fleet week, which has been held in New York City since 1984, celebrates the U.S. Navy and Marines Corps with a week of ship visitations and military demonstrations. Fleet Week concludes on Memorial Day with a military flyover to honor those killed while serving in the military. (Photo by Spencer Platt/Getty Images)

A total lunar eclipse is seen through the old city walls on June 15, 2011 in Jerusalem, Israel. The longest lunar eclipse for a decade took place tonight. A lunar eclipse comes when the sun, Earth and moon line up and Earth's shadow falls on the moon. (Photo by Uriel Sinai/Getty Images)