New Lamps (Unabridged‪)‬

On Mars, the dust is yellow, and microscopically fine. With the result that it penetrates to the sensitive lung tissues of a human being, causing distress. Crossing the street toward the dive set into the towering wall of the cliff overhead, Jim Ronson sneezed violently. He wished fervidly that he might get another glimpse of what Robert Heinlein, two centuries before, had nostalgically called The Cool Green Hills of Earth, and again smell air that had no dust in it. Deep inside of him, a small voice whispered that he would be very lucky if he ever saw the green hills of Earth again.