지하생활

과학동아 1989년 07호

lines, gas mains, and so on. In northern cities with long, harsh winters, there is a tendency to build underground shopping malls, veritable cities in themselves.The thought of living underground, of burrowing in the earth like moles, of separating one's self from the air and sky may seem unpalatable, but if we stop to think of it, there can be many advantages to living underground.First, ...