....
Its actually quite the opposite. All of the CO2 reduction solutions would make the world a better place. ....
No, that's ridiculous.
First of all, your mistake is this claim. Note the bolded word.
All of the CO2 ....
It should be obvious there have been some really, really bad ideas floated.
You want examples or would you like to revise your claim?
All that I know of. I would love to hear the examples and can't imagine they are anything being seriously considered and not just "floated".