Seven-year-old Mimi Meade winces from the sting as Dr. Richard Mulvaney inoculates her April 26, 1954 in McClean, Va., with the new Salk polio vaccine. Mrs. John Lucas, a registered nurse, holds Mimi's arm steady as she gets one of the first injections of the countrywide test. (Photo by Harvey Georges/AP Photo)

A volunteer tries out a protective suits for health workers, at the International Islamic University Malaysia in Gombak, outskirts of Kuala Lumpur, Malaysia Friday, April 10, 2020. The Malaysian government issued a restricted movement order to the public for the rest of the month to help curb the spread of the new coronavirus. (Photo by Vincent Thian/AP Photo)

Growing cities, overuse of fertilizers and factory wastewater have degraded China's water supplies to the extent that half the nation's rivers and lakes are severely polluted. China aims to spend $850 billion to improve filthy water supplies over the next decade, but even such huge outlays may do little to reverse damage caused by decades of pollution and overuse in Beijing's push for rapid economic growth. Photo: Fishermen row a boat in the algae-filled Chaohu Lake in Hefei, Anhui province, June 19, 2009. (Photo by Jianan Yu/Reuters)

Forensic investigators look at the body of a man infected with the new coronavirus who collapsed on the street and died, according to Police Captain Diego Lopez, in Quito, Ecuador, Tuesday, May 5, 2020. (Photo by Dolores Ochoa/AP Photo)

Residents of the Korean port of Inchon surrender to American troops. (Photo by Bert Hardy/Getty Images). 1950

A man does physical exercise during sunset over the Finnish Gulf coast in St. Petersburg, Russia, Wednesday, April 14, 2021. (Photo by Dmitri Lovetsky/AP Photo)

A yawning leopard appears to be laughing instead at Chobe National Park in Botswana in January 2023. (Photo by Nick Dale/Solent News & Photo Agency)

A kingfisher plunged into the water in Trowbridge, Wiltshire, UK in the first decade of June 2025, to grab a fish for lunch – but its prey twisted free in a last-second escape. (Photo by Alan Benson/Caters News Agency)