Quote Originally Posted by Rick Donaldson View Post
Levels of this gas in the atmosphere have not been measured, but scientists say it is a concern and are calling for it to be included in any future emissions cutting agreement.
So, we should curb this because of something it might do?

If I were doing this, I would be taking an umbrella with me everywhere I go because there is a chance, even on days it is sunny, where it could rain.