The level of our technology has allowed us to live in crazier and crazier places over the past one hundred years. Most people don’t think about it but for a lot of human history, people could really only live in the places that temperature, or other factors, allowed. It seems like a pretty obvious historical fact but it’s not to a lot of people. For a rather obvious example, up until about forty years ago it was impossible to have a base of any sort in Antarctica. Of course, you might say, but the idea behind this fact might go…