Not everybody uses it, and this is a very important point. Even with just a billion people using it, a few decades back … and some of those billion using roll-on deodorant … the emission of chlorofluorocarbons still made a giant hole in Earth’s ozone layer.
And it was widening.
The global community was alarmed and took action and now three things are true:
* More people than ever use deodorant (praise the Lord)
* None of it emits chlorofluorocarbons (an alternative propellant was found — likewise for refrigerants)
* The hole in the ozone layer gradually disappeared (but you should still use SPF 15 or higher this weekend)
Okay? Do you see my point?
No?
My point is that if a little Right Guard can threaten our atmospheric equilibrium, isn’t it just really dumb to bet that the literally trillions of pounds of carbon dioxide we dump into the air each year will have no effect? Be honest: don’t you use more gasoline than deodorant?