You are making some big assumptions here about CO2 etc...
We have been told, almost non-stop for the last 20 years CO2 is the cause of the planet heating up, then nature throws a curve ball and starts cooling down for the last 10, so if CO2 is still going up why is global temp going down and we're still being told CO2 is causing us to heat up?
Also Hansen has just done an about face almost, he's gone from singing the CO2 song, to now claiming soot is responsible for at least 50% of melting slabs of ice. So again if CO2 is such a boogyman why are we suddenly being told it mostly isn't any more?
I agree we need to clean up our activities on this planet, but targeting CO2 probably won't have any effect what so ever, in fact some are claiming the increased CO2 has increased plant diversity and all the wonderful things that go with it, like potentially less people starving.
The planet will be here long after we're gone, something else will evolve to be the dominate species on the planet so we need to be honest what we're doing here, saving our selves, not saving the planet.
Then of course there is the little matter of SO2, which has the opposite effect to CO2 by cooling the planet, but they aren't properly measuring most emissions so we don't really know what is going on here, just a lot of people jumping up and down crying wolf. All they really care about is their on going funding to further research things that may be of no consequence.
If these politicians were serious about saving people on this planet why are they doing nothing about funding people starving? A sub-org of the UN was asking for 45billion to feed the starving, but no one gave a cent. What about all the curable dieses in less wealthy nations, how much is being done about that to save the 1-3 million or so people that die just from malaria a year?
Copenhagen failed for the same reason it existed, it was created out of greed and the lure of billions if not trillions of fresh tax dollars, but no one trusted anyone else with the money so it fell over.
All the politicians are greedy hypocritical sods that shouldn't be given a cent more in money while they keep lying to us about caring about people and/or "the planet"