Er' what gas is supposed to be the reason for global warming????????
Quite.
Anyway, whatever's happened to the dreadful "ozone hole" that was going to kill us all shortly a few years ago?
It has disappeared, hasn't it, and no-ones heard of it for a decade or more!
I find it hard to credit that some people feel OK to trade lives for some imaginary "ecological" benefit that was forgotten about 10 yrs ago because it has disappeared...