It seems pants on head crazy that a mere 20 feet or so below the ground it's a livable and pretty comfortable temperature year round, virtually worldwide. And yet we spend an enormous amount of money, time and energy heating and then cooling our living spaces by almost any other means possible. Yes, the occasional home has geothermal, but the fact that it's still the exception baffles me. Heck, if you have a well or even city water then you are already piping 55-degree fluid into your living space and a lot of the complicated work is already done.
I get that there are some tough engineering challenges involved, but as a species we don't seem all that interested in solving them relative to the effort we've put into many other endeavors.
I get that there are some tough engineering challenges involved, but as a species we don't seem all that interested in solving them relative to the effort we've put into many other endeavors.