Robbie Lee of Team Great Britain competes in the Men's 10m Platform Preliminaries on day 23 of the Singapore 2025 World Aquatics Championships at OCBC Aquatic Centre on August 02, 2025 in Singapore. (Photo by Adam Pretty/Getty Images)

The moment baby elephant gets a helping hand to escape the slippery waterhole was caught on camera in the Addo Elephant National Park in the Eastern Cape of South Africa in the last decade of August 2025. (Photo by Anne Laing/Caters News Agency)

A mahout rides on painted elephant as they march during a procession near the Grand Palace to pay their respects to Thailand's former queen Sirikit in Bangkok on November 27, 2025. (Photo by Chanakarn Laosarakham/AFP Photo)

A woman stands as fireworks light up the sky over Copacabana Beach during New Year's celebrations in Rio de Janeiro, Wednesday, January 1, 2025. (Photo by Bruna Prado/AP Photo)

Vehicles clog a highway during a hazy day in Beijing, China, Wednesday, February 26, 2014. Beijing remained cloaked in hazardous white pollution hiding much of its skyline Wednesday, despite the announced closures or production cuts at 147 of the city's industrial plants. (Photo by Ng Han Guan/AP Photo)

Final match Soccer Humanoid Kid Size between DARwIn vs. AUTMan at the World Championship finals of RoboCup 2013 in Eindhoven (NL). (Photo by Bart van Overbeeke)

A burning train wagon is seen after an explosion at Lac Megantic, Quebec, July 6, 2013. A large swath of Lac Megantic was destroyed Saturday after a train carrying crude oil derailed, sparking several explosions and forcing the evacuation of up to 1,000 people. (Photo by Mathieu Belanger/Reuters)

Among the fish populations that could be harmed by the Xayaburi dam in Laos is the critically endangered Mekong giant catfish, considered by the Guinness Book of World Records to be the world’s largest freshwater fish. The fish, which grows to 650 pounds and about 10 feet long, is only found in the Mekong River. It is migratory, moving between downstream habitats in Cambodia upstream to northern Thailand and Laos each year to spawn. Some experts fear the Xayaburi dam could block the migration and drive the giant catfish to extinction. (Photo by Courtesy of Zeb Hogan/University of Nevada, Reno)