A boy attempts to keep a candle lit in a flooded cemetery following Typhoon Molave, in Masantol, Pampanga, Philippines, October 27, 2020. (Photo by Eloisa Lopez/Reuters)

A young boy plays with soap bubbles near Hofburg Palace at Heldenplatz, one of the top tourists attractions in Vienna, Austria, January 26, 2016. (Photo by Christian Bruna/EPA)

Local boy Faddei plays in a destroyed Russian military truck in the village of Kolychivka, in Chernihiv region, Ukraine on April 27, 2022. (Photo by Vladyslav Musiienko/Reuters)

A boy shoots a World War II ages machine gun with blanks at a weapon exhibition during a military show in St. Petersburg, Russia, Sunday, July 10, 2022. (Photo by Dmitri Lovetsky/AP Photo)

An Afghan boy covers himself with a plastic sheet as he rides on a donkey after rains in Argo district of Badakhshan province on March 20, 2023. (Photo by Omer Abrar/AFP Photo)

Actor Will Smith attends the Los Angeles Premiere of Columbia Pictures' “Bad Boys: Ride Or Die” at the TCL Chinese Theater on May 30, 2024 in Hollywood, California. (Photo by Eric Charbonneau/Getty Images for Sony Pictures)

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)

These photographs of hundreds of ducks following their leader down a river are truly mesmerizing. Rafeur Rahman of Bangladesh climbed a high bridge and saw hundreds of ducks apparently playing a game of follow the leader. More than 500 ducks live on the river, where the mosses and snails provide the perfect habitat. Here: Ducks in the river Baral in Bangladesh. (Photo by Rafeur Rahman/Caters News Agency)