We know the internet is very, very big. But did you know that it gobbles up two percent of the world’s total electricity consumption? Some goes to run the massive server farms used by Facebook, Google, Apple and all the other data providers and storers. But it’s cooling these servers down with fans which really sucks energy. So the race is on to find alternative, low-energy cooling solutions, and now researchers in the UK believe they’ve discovered how to cut that energy consumption by up to 97 percent. I went to the city of Leeds and filed this report for Spectrum on Deutsche Welle Radio: