A few days ago I stopped at a gas station. As I was pumping, I noticed a vole scurrying across the parking lot. The lot was covered with a thin layer of that dry compacted, dirty snow that you get when it’s been cold enough that the snow never melted or turned ice. The vole would zip along for about six feet, and then try to burrow under a clump of snow, only to hit pavement so it would zip another few feet and try again. It had come from behind the gas station where there is a field, and it ...