fromWIRED
4 days agoHow to Keep Subways and Trains Cool in an Ever Hotter World
The highest temperature that Jonathan Paul has ever recorded in a London Tube station is about 42 Celsius, or 107.6 Fahrenheit. Paul, a researcher at Royal Holloway, University of London, uses his thermometer-equipped smartphone to take such readings. 42C is the kind of heat that would send someone running to the nearest air-conditioned building. Underground, though, they can't. There's nothing but stifling tunnels and screeching trains down here.
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