Sure, 1000 nukes going off at the same time would eliminate human life on earth, and all of the fallout would ------------------- yee haa, change the climate for a few thousand years-----------so yes, man could change the climate of our planet-----------you win.
BUT, burning oil, coal, and natural gas to improve the lives of humans is not, could not, will not, change the climate enough for anyone to notice, 2/10 of a degree every 200 years----------its nothing, its within the measurement error of the measurement instruments----------its theory.
But, if you want to live under a rock and eat leaves--------go right ahead---save the world.
You say it won't change the climate enough for anyone to notice. I disagree.
CO2 and temperature rise go hand in hand.
Here's a limited record of CO2 and temperatures, CO2 and temperatures are pretty similar, except in the last hundred years or less.
Which comes first, CO2 rising or temperatures rising? Is it the CO2 that causes the rise, or is it the temperature rise that causes more CO2?
Why do they go hand in hand?
What happens when they don't?
The answer is we don't know. What we do know is that when humans ever mess with nature in a big way, it goes wrong.
You're talking 2/10th a degree every 200 years. I'm talking more than that.
Like I've said, and like some scientists who deny man made global warming and others have said, we should be getting colder. All predictions based on the 100,000 year cycle suggest that at some point from the 1990s to the 2000s we should have been getting colder, and quite a bit colder.
We're not, so the temperature rises you're talking about should also take into account the supposed drop we should be experiencing. It's not about about slowly we're getting warmer, it should be how far away we are from the natural temperature.
And whether it's theory or not, it doesn't matter. It's actually gambling.
You're betting that nothing will happen. You're betting that CO2 emissions, a known greenhouse gas, plus other gases like methane which are even stronger, will go into the atmosphere, as as a greenhouse gas, increase temperatures slightly and woohoo, suddenly Canada becomes the sunshine state.
What you have to remember is this. CO2 and methane and other greenhouse gases stay in the atmosphere a long time.
Greenhouse gas - Wikipedia, the free encyclopedia
according to wikipedia we've seen an increase of 40% of CO2 in the atmosphere since 1750. In theory we should be seeing a reduction in the last few years. We're not.
Methane has seen a 167% increase.
The more we pump out, and the reality that they spend a long time in the atmosphere and contribute to the greenhouse effect means we could be a majorly warm greenhouse. Before these gases had time to escape and weren't always replaced, hence we went up and down. Now we're just going up. DO you think anything can cope with just going up?
A funny thing is, the Ozone layer. It was discovered in 1913, by 1978 people realised we were doing harm to it. Yet the EU didn't bother. The US, Canada and Norway put things in place. A few years later and the finding of the ozone layer being depleted caused more people to take notice.
Since then the depletion of the ozone layer has lowered. Why? We did something about it.
Now, scientists who claimed there was a problem with the ozone, are probably very similar to those saying that man is having an adverse effect on the climate.
But you seem to be a gambling man. I'm not.
Ironic aint it 
