I'm reminded of this video talking about cooling the London Underground. Since it's running through clay, it's very well insulated and the ground around it is w

I'm reminded of this video talking about cooling the London Underground. Since it's running through clay, it's very well insulated and the ground around it is warming year over year. https://www.youtube.com/watch?v=hQo6_GkITe0 https://www.youtube.com/watch?v=hQo6_GkITe0