The cold is much more offputting to us (coming from California here)! But having a great time so far.<p>Leipzig back then was unreal. I did a quick search for historical data on SO2 and particulate concentrations but I couldn&#x27;t find anything. Not only are our environmental standards higher today, so are our expectations about the existence of data!<p>OK, the air here is by no means good, and it <i>is</i> tragic to mess up something so fundamental to happiness. But things are improving and I bet the air will too.