Comment: It boggles my mind thinking that you know how additives lower the freezing point of some items, raise them for others. You can make things grow faster, or render our dirt toxic by what you put on it. You know all about various types of pollution affecting our air...but. BUT, you suddenly stop listening when scientists tell you that they are measuring what we are pumping into the air is raising CO2 levels? Were you such a hater that you told all your friends we didn't need the ozone layer either?