As world heats up, UN cools itself the cool way: with water

As more and more people want to stay cool in a planet that is steadily heating up, energy experts point to this kind of water-based system as a good alternative to air conditioning. But in many cases they are hard to set up. The system has been part of the New York complex since it opened in the 1950s, chief building engineer Michael Martini told AFP during a tour of the cooling equipment. The system, overhauled with the rest of the complex from 2008 to 2014, cools the UN center using less energy than a conventional air conditioning system.