A polar bear fast asleep at London Zoo. (Photo by Fox Photos/Getty Images). 1961

Greyhounds compete during a race at Santiago city, March 8, 2014. With over 100 years of history, greyhound racing attracts people mainly from rural areas of Santiago every weekend. Some dogs come from Argentina, the United States and Ireland and can develop a speed of up to 80 kilometers per hour on a straight running track of about 200 meters, according to organisers. Bets range from $2 to $1,000 per race, offering a livelihood for breeders and gamblers. (Photo by Ivan Alvarado/Reuters)

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)

Farmers plant rice seedlings in a paddy in Karanganyar, near Solo, Central Java, Indonesia in this April 13, 2016 photo taken by Antara Foto. (Photo by Maulana Surya/Reuters/Antara Foto)

In this Thursday, November 1, 2018, photo, a girl uses a hammer to crack open shells for edible seeds to sell as snacks in Yangon, Myanmar. A United Nations report says some 486 million people are malnourished in Asia and the Pacific, and progress in alleviating hunger is stalling. (Photo by Thein Zaw/AP Photo)

Students participate in a yoga practice session ahead of International Yoga Day, at a school in Ahmedabad on June 17, 2022. (Photo by Sam Panthaky/AFP Photo)

This photo provided by Red Antler Processing shows the alligator sport hunting team made up of, from left, Tanner White, tag-holder Donald Woods, Will Thomas and Joey Clark as they hoist, with the help of a forklift, the longest alligator officially harvested in Mississippi, Saturday, August 26, 2023, at Red Antler Processing in Yazoo City, Miss. The male alligator weighed 802.5 pounds and measured 14 feet, 3 inches long, and its length broke the state record as the longest alligator ever caught, according to the Mississippi Department of Wildlife, Fisheries and Parks. (Phoot by Shane Smith/Red Antler Processing via AP Photo)

A member of India’s Dongria tribe faints in trance during the two-day long Niyamraja Festival atop the Niyamgiri hills near Lanjigarh in Kalahandi district, Orissa state, India, Sunday, February 22, 2015. Every year, members of this indigenous group celebrate this festival sacrificing animals and birds in worship of their deity. (Photo by Biswaranjan Rout/AP Photo)