This photo taken on November 7, 2021 shows a panda falling from a platform as it plays in its enclosure after snowfall in Xian in China's northern Shaanxi province. (Photo by AFP Photo/China Stringer Network)

Russian cosmonaut Alexander Skvortsov, Expedition 40 flight engineer, attired in a Russian Orlan spacesuit, participates in a session of extravehicular activity (EVA) in support of science and maintenance on the International Space Station on August 18, 2014. During the five-hour, 11-minute spacewalk, Skvortsov and cosmonaut Oleg Artemyev (out of frame) deployed a small science satellite, retrieved and installed experiment packages and inspected components on the exterior of the orbital laboratory. (Photo by NASA)

Vapour bounced off the wings of the Lockheed Martin F-35 Lightning II as it sped over the Welsh mountains at a swift 575mph on February 10, 2022. The jet was taking part in a low-level training exercise through the Mach Loop – a series of valleys in North Wales. (Photo by Thomas Winstone/News Images)

A security guard tries to separate a boy who hugs India's captain Rohit Sharma, right, after invading the field of play during the second one-day international cricket match between India and New Zealand in Raipur, India, Saturday, January 21, 2023. (Photo by Aijaz Rahi/AP Photo)

An army cadet contestant with his kart trailing smoke hits the ramp hard and crashes during the 70 year anniversary soap box derby on April 02, 2023 in Hunstanton, England. Over 40 home built karts raced through the streets of the Norfolk town, around bends and over jumps. The race was first held in1953. (Photo by Martin Pope/Getty Images)

A woman looks at model of the Cathedral Mosque in Kazan, during the 28th International Exhibition – Forum of Architecture and Design “Arch Moscow” in Moscow, Russia, 24 May 2023. Arch Moscow is one of the oldest architectural and construction exhibitions in Moscow. The 28th International Exhibition – Forum of Architecture and Design takes place from 24 May to 27 May 2023. (Photo by Yuri Kochetkov/EPA/EFE/Rex Features/Shutterstock)

Two people ride a motorcycle as a Taiwanese Air Force Mirage 2000 fighter jet approaches for landing at an air force base in Hsinchu in northern Taiwan on May 23, 2024. China on May 23 encircled Taiwan with naval vessels and military aircraft in war games aimed at punishing the self-ruled island after its new president vowed to defend democracy. (Photo by Yasuyoshi Chiba/AFP Photo)

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)