A little known law of physics is that time speeds up the older you get. This month's City Daily Photo theme has me reflecting on the shortness of life and the imperative to live it the best you can. In the end, all things are ephemeral, even the universe itself. It all depends on your metric. Linked to City Daily Photo. This photo was taken a year ago, before the cemetery, in a bow to the drought, turned off the sprinklers. If you visited this spot today, you'd find the lawn is brown. Brown is the new green.