1. I know what Jack was implying. He never said it was the ONLY thing, but was strongly implying that it was by far the major factor in climate change throughout Earth's history.
2. Perhaps you should consider what the word "lying" means - it refers to "a statement that one knows is false, that is made with intent to deceive". If you're going to call me a liar, then you first need to prove to YOURSELF that I know that a statement that I made was false, and then you need to show that I used that false statement with intent to deceive. In other words, the bar for determining whether one is a liar is and should be high indeed. I am often wrong (and I am grateful indeed when someone shows me I am wrong, for that means he or she is helping me remove some of my ignorance), but I don't lie. That's one thing I'm grateful for when it comes to the anonymity of the internet - it gives me the freedom to say what I truly believe. Of course, as far as you know, all that could be a lie. All I can tell you in return is that over the years, I've found that the more one tells the truth, the better one is able to discern the ring of truth when he hears it.
3. If you want to put me on your 'ignore' list, that's up to you.