"Cooling a Fevered Planet: Post Carbon-Pricing Politics"
Out of those, I like this the best. Although "Cooling the Climate Crisis" has some nice alliteration going for it. On the other hand, it sounds like you're just trying to cool the political crisis, i.e. make everyone stop yelling so loudly.
Or shorter
"Cooling a Fevered Planet: Beyond Carbon Pricing".
No longer has the word "politics" in it, but hopefully that is implied.
Or: "Cooling Fevered Earth: Beyond Carbon Pricing".
Cause we really don't care how hot Venus gets.
Is your target audience likely to know about carbon pricing? Enough to go "Yeah, I want to read that book!"?
Cooling our Fevered Planet: Policy Solutions Beyond Carbon Pricing
Cooling our Fevered Planet: Unconventional Solutions to the Climate Crisis
or, losing fevered planet again:
Solving the Climate Crisis: Policy beyond Carbon Pricing and Conventional Wisdom
I like -t's too, but now am thinking of Connie's point that too much focus on carbon pricing might exclude people not aware of it. So above?
Or On Edit: "Solving the Climate Crisis: Policy Beyond Conformity and Carbon Pricing"
Deena, did SA reach you? She posted Natter saying she was trying to get in touch.