A total lunar eclipse is seen through the old city walls on June 15, 2011 in Jerusalem, Israel. The longest lunar eclipse for a decade took place tonight. A lunar eclipse comes when the sun, Earth and moon line up and Earth's shadow falls on the moon. (Photo by Uriel Sinai/Getty Images)

A mahout splashes water on his elephant in the river Sabarmati on a hot summer day in Ahmedabad, India, May 20, 2015. (Photo by Amit Dave/Reuters)

A stranded cat swims through flood water searching for dry land June 16, 2008 in Oakville, Iowa. (Photo by Scott Olson/Getty Images)

A man drinks at a "colored" water cooler in a streetcar terminal in Oklahoma City, July 1939. (Photo by Reuters/Library of Congress)

A mahout splashes water on his elephant on a hot summer day in Ahmedabad, India on April 8, 2019. (Photo by Amit Dave/Reuters)

The performers prepare for the show. Fontana, a travelling water circus produced by Cirque Du Liban at Festival City in Dubai. (Photo by Chris Whiteoak/The National)

A picture composed by the French street artist JR is plastered to a wall under a highway as part of a community project called “Through A Mother's Eyes”, which involves members of the economically distressed neighborhood of Hunts Point in images taken by and of themselves on June 30, 2011 in New York City. JR, a recent TED prize winner, has staged similar projects around the world that look to transform high crime and impoverished neighborhoods into spaces for street art combined with the celebration of community. (Photo by Spencer Platt/Getty Images)

A protester uses his laptop computer in the “Occupy LSX” camp outside St. Paul's Cathedral ahead of a demonstration against higher tuition fees and privatisation in universities on November 9, 2011 in London, England. Around 4000 police officers are on duty and are to be allowed to deploy baton rounds if needed. The march is expected to finish at London Wall in the heart of the capital's financial district. (Photo by Oli Scarff/Getty Images)