Quote Originally Posted by Xaqaria View Post
I guess I missed that one, and I can't find it on a re-skim. Where did he mention Hydrogen cyanide?
He didn't. He said 38 out of 100,000 molecules of air are carbon dioxide, and so he can't believe it can destroy the balance of the earth's atmosphere. I countered with an obvious example of a similar effect.

Sorry for the confusion.
Anyway, yeah, the guy knows nothing about climate science, so... his opinion doesn't really matter.