Submitted by likessvenska t3_ygxkzv in todayilearned
WesternOne9990 t1_iug8x55 wrote
Reply to comment by Meteor_VII in TIL In China more than 40 million people live in caves by likessvenska
It’s not common but here in America there’s houses build underground or under an artificial hill for geothermal regulation. They say at a nice 50ish degrees if I remember.
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