the problem with planting trees is that they only really absorb CO2 while they're growing, and they also respire, they don't just draw in CO2, they produce lots of it too.
and when those trees die or are burned, more CO2 is released into the atmosphere, especially if you burn it. also, the trees and vegetation can't do anything about the organic (methane) and sulpur based gases. in short, planting more trees is useless, although they should be replanted anyway, seeing as all the deforestation is causing extinction etc...
what's needed is for some brightspark to create a large scale machine that can convert the gases into something less harmful. hell, even burning all the methane in the atmosphere, which would produce massive amounts of CO2 would cool the earth down.
CO2 is dissolved into the oceans as well, infact CO2 levels are at their lowest since the earth was formed, it's the organic and sulphur based molecules that are absorbing all the energy...
find a way to get rid of em and you'll be the richest and most famous scientist and public hero in history, which is always a neat little nickname
