A request to readers - give us your Rubio climate rebuttals

I'd like to try a little experiment here - a little over a week ago, Marco Rubio graced the Internet with his nontheories regarding climate change.  I thought about doing a line-by-line rebuttal and then decided you all might be able to do a much better job than me.

So below I'm putting Rubio's claims down, one at a time for your rebuttals and prebuttals.  As a way of responding to the finding that repeating falsehoods reinforces them, even if corrections are added, the way I want to do this is precede each claim with the truth, then give the claim, and then follow up with more truth.

Just leave your rebuttals and links below in the comments - and please say which claim(s) you're responding to. As they develop, I'll add the best.  What's really needed is a special wiki devoted to refuting his nonsense, but in its absence I'll be the referee (Eli too if he wants), adding the best refutations and links.  I'll look for the most concise, most readily-understood refutations with the most-generally-accepted link sources.  No more than two or maybe three before and after each claim - if a refutation gets bumped, it'll be included as additional sources in footnotes.

Let's see if this works.  To the Rubio quotes!

Claim 1.  Relevant truth:
Claim 1.  Ignorance from Rubio:  "Anything we would do on [climate change] would have a real impact on the economy but probably if it's only us doing it a very negligible impact on the environment."
Claim 1.  More truth:

Claim 2.  Relevant truth:
Claim 2.  Ignorance from Rubio:  "Ultimately if you look at the developing countries which are not developing countries any more, China, India, and others, they're now the largest polluters in the world by far."
Claim 2.  More truth:

Claim 3.  Relevant truth:
Claim 3.  Ignorance from Rubio:  "....On the other hand if we unilaterally impose these sorts of things on our economy it would have a devastating impact on economics depending on which measure it is we're talking about."
Claim 3.  More truth:

Claim 4.  Relevant truth:
Claim 4.  Ignorance from Rubio:  "I think that's what more than anything else is standing in the way of doing anything on this, there has to be a cost-benefit analysis to every one of these principles that people are pushing on and the benefit I think is difficult to justify when you realize it's only us doing it, nobody else is doing this."
Claim 4.  More truth:

Claim 5.  Relevant truth:
Claim 5.  Ignorance from Rubio:  (Responding to the question whether he sees global warming as a threat to Florida)"....The fundamental question is whether man-made activity is what's contributing the most to it.  I understand there's significant scientific consensus on that issue.  But I've actually seen reasonable debate on the principle."
Claim 5.  More truth:

Claim 6.  Relevant truth:  "Delaying action is a false economy: for every $1 of investment in cleaner technology that is avoided in the power sector before 2020, an additional $4.30 would need to be spent after 2020 to compensate for the increased emissions."  International Energy Agency 2011 (via ThinkProgress)
Claim 6.  Ignorance from Rubio:  "But beyond that the secondary question is is there anything government can do about that that will actually make a difference.... When you look at the cost benefit analyses being proposed, if you did all these things they're talking about, what impact would it really have on these changes that we're outlining?  On the other hand I can tell you the impact that it would have on certain industries and on our economy, and that's where it falls apart."
Claim 6.  More truth: