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

Photo caption: One advantage of water systems is that they avoid emissions of hot air into cities already enduring heat waves © ANGELA WEISS / AFP. Article by Amélie BOTTOLLIER-DEPOIS. Tech Xplore – May 12, 2025. Original article published by AFP.

Deep in the bowels of the UN headquarters, a pump sucks in huge amounts of water from the East River to help cool the complex with an old but energy-efficient mechanism. 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. […]

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