This new evidence you noted in the thread title was charted some 9 years ago.
From:
http://www.daviesand.com/Choices/Precautionary_Planning/New_Data/
Looking at that chart, I can't help but see a pattern. Temperature & CO2 spike up, and slowly drop back down. Without human intervention. I also can't help but see that the antarctic ice has been almost 2 degrees warmer in the past and still survived. Where did all those poor penguins go when their habitat was destroyed at least 3 times before?
I know, shallow arguments. But at least I'm providing some counterpoint and not another comment to a comment.