You dont think that man has added to co levels in the atmosphere?
Of course we've added a tiny amount of CO2... But at the same time, the percentage of CO2 in the air is still 0.04% the same as it was 500 or 1000 years ago before we'd added anything.
If you take the misleading parts per million (ppm) which the enviromentalists love to use, say 400ppm now and then the 440ppm they claim we will reach in 20/30 years time, they both still represent 0.04% of the air we breath. Even if we doubled CO2 to 800ppm (which we won't) that would still only equate to 0.08% of the air!
The oceans, plants and volcanos etc produce so much CO2 each year that it makes our contribution pale into insignificance, yet the earth has maintained the level of CO2 around the 400ppm or 0.04%. How? because IMO, as CO2 rises, so does the rate of plant growth, and they breath in CO2 and give out oxygen instead.
Forgive the analogy, but it's a bit like saying one drop of p*ss in the ocean or two! Yes you've doubled the amount of p*ss in the ocean, but on the big scheme of things then if you're going for a swim, it makes absolutely no difference.
If we'd invested the same amount of money into nuclear fusion (fusion, not fission that we use now) that we have into useless windmills and solar panels the we might actually be a lot closer to having a truly clean power source that produces electricity 24/7!
As for the global warming "scientists" who tell us we are all going to die etc etc, if they admitted that there was no man-made global warming, then their jobs and multimillion pound grants would disapear overnight. If thats not a vested interest than i don't know what is?
All of this is my opinion from observing the evidence and sitting and thinking about it, i may be wrong, but i just wish more people would sit back and think about things for themselves, rather than blindly accepting everything they are told by the media etc....... At one time every "scientist" would have told you the earth was flat!