Ellen MacRae a student from Edinburgh University take a lateral flow antigen test at a test centre which is also open to students in Edinburgh Napier University, Queen Margaret University and SRUC on December 1, 2020 in Edinburgh, Scotland. The programme is running in partnership between the University of Edinburgh and other Scottish universities, the Scottish Government and NHS Test and Protect, supporting students leaving their term-time accommodation to travel home at the end of term for the winter break. (Photo by Jeff J. Mitchell/Getty Images)

A man stands on breakwater with his bike along the waterfront in Auckland, New Zealand, Sunday, February 12, 2023. New Zealand's national carrier has canceled dozens of flights as Aucklanders brace for a deluge from Cyclone Gabrielle, two weeks after a record-breaking storm swamped the nation's largest city and killed several people. (Photo by Alex Burton/NZ Herald via AP Photo)

Thor Teigen poses in a fur jacket next to a thermometer displaying a temperature of 131 degrees Fahrenheit / 55 degrees Celsius at the Furnace Creek Visitors Center, in Death Valley National Park, Calif., Sunday, July 7, 2024. Forecasters said a heat wave could break previous records across the U.S., including at Death Valley. (Photo by Ty ONeil/AP Photo)

People stand next to a ship, containing tonnes of hazardous mercury-mixed oil, as it was allowed to anchor at Gadani ship-breaking yard in Gadani, Pakistan, 28 May 2021. Authorities have launched an investigation into the anchoring of a ship at the Gadani shipbreaking yard despite Interpol's warning that the ship contains dangerous chemicals. (Photo by Rehan Khan/EPA/EFE)

Behishta,11, listens during 4th grade class at the Zarghoona high school on July 25 2021 in Kabul, Afghanistan. The Zarghoona girls high school is the largest in Kabul with 8,500 female students attending classes. The school opened after a nearly two-month break due to the coronavirus (COVID-19) pandemic. (Photo by Paula Bronstein/Getty Images)

Jacob's Well is a perennial karstic spring in the Texas Hill Country flowing from the bed of Cypress Creek, located northwest of Wimberley, Texas. The twelve foot (four meter) diameter mouth of the spring serves as a popular swimming spot for the local land owners whose properties adjoin Cypress Creek. From the opening in the creek bed, Jacob's Well cave descends vertically for about thirty feet (ten meters), then continues downward at an angle through a series of silted chambers separated by narrow restrictions, finally reaching a depth of one hundred and twenty feet (forty meters). Until the modern era, the Trinity Aquifer-fed natural artesian spring gushed water from the mouth of the cave, with a measured flow in 1924 of one hundred and seventy gallons per second (six hundred and forty liters per second) discharging six feet (two meters) into the air. The spring is the greatest source of water recharging the Edwards Aquifer.

The vendors show the toy of snake at the Spring Festival Temple Fair for celebrating Chinese Lunar New Year of Snake at the Temple of Earth park on February 9, 2013 in Beijing, China. The Chinese Lunar New Year of Snake also known as the Spring Festival, which is based on the Lunisolar Chinese calendar, is celebrated from the first day of the first month of the lunar year and ends with Lantern Festival on the Fifteenth day. (Photo by Feng Li)

An Indian labourer sifts coloured powder, known as “gulal”, to be used during the forthcoming spring festival of Holi, inside a factory at Fulbari village on the outskirts of Siliguri on March 6, 2017. Holi, the popular Hindu spring festival of colours is observed in India at the end of the winter season on the last full moon of the lunar month, and will be celebrated on March 13 this year. (Photo by Diptendu Dutta/AFP Photo)