Post

Holes xkcd.com/3266/

It's wacky that people want to build cities on Mars when we hardly know how to move ten miles from the one place we know humans can live.

Cities on Mars would have access to the sun, at least, unlike ten kilometers under the surface of our planet.

I wonder how the energy provided by the earth that far down compares to the amount of energy provided by the sun that far out. Nobody would freeze to death down there.