Ethnic Cham Muslim people pass the time near their boats on banks of Mekong river in Phnom Penh July 29, 2013. About 100 ethnic Cham families, made up of nomads and fishermen without houses or land who arrived at the Cambodian capital in search of better lives, live on their small boats on a peninsula where the Mekong and Tonle Sap rivers meet, just opposite the city's centre. The community has been forced to move several times from their locations in Phnom Penh as the land becomes more valuable. They fear that their current home, just behind a new luxurious hotel under construction at the Chroy Changva district is only temporary and that they would have to move again soon. (Photo by Damir Sagolj/Reuters)

Residents with their empty containers crowd around a municipal tanker to fetch water in New Delhi, India, February 22, 2016. The Indian army has taken control of a canal that supplies three-fifths of Delhi's water, the state's chief minister said on Monday, raising hope that a water crisis in the metropolis of more than 20 million people can be averted. (Photo by Anindito Mukherjee/Reuters)

The International Garden Photographer of the Year has announced the winner of their Black & White Photo Project 2019. Here: Blue Tit, Criccieth, Wales. (Photo by Alan Price/The International Garden Photographer of the Year)

“I See Sea” by Photographer Dmytriy Dokunov. The frozen Black Sea. Scene of action: Odessa, Ukraine; January, 2012. (Photo by Dmytriy Dokunov)

Beach Policeman, Potomac River, 1922. (Photo by National Photo Company/Colorized by Patty Allison)

The latest fashion from Pyer Moss is modeled Saturday, July 10, 2021, in Irvington, N.Y. Staged at the Villa Lewaro mansion, the home built by African American entrepreneur Madam C.J. Walker in 1917, the show was themed around inventions by African Americans. (Photo by Bebeto Matthews/AP Photo)

Kangba women carry barrels to fetch water at a village on April 10, 2005 in Zuogong County of Tibet, China. Kangba people began to fetch water with the traditional barrels hundreds of years ago. Kangba people are one of the Tibetan tribes living in Kangba Region, a juncture area of Sichuan and Yunnan Provinces and the Tibet Autonomous Region. Kangba people are famous for their beauty, toughness and straightforwardness. (Photo by China Photos/Getty Images)

Six month- old baby elephant “Clear Sky” is kept afloat with the help of a harness during a hydrotherapy session at a local veterinary clinic in Chonburi Province on January 5, 2017. After losing part of her left foot in a snare in Thailand, baby elephant 'Clear Sky' is now learning to walk again – in water. (Photo by Roberto Schmidt/AFP Photo)