Aside from the fact that there is ample scientific evidence to prove that there have been cycles of temperature fluctuations between glacial periods throughout the entire history of the Earth? Or aside from the fact that temperatures in the Atlantic Period were significantly hotter than they are today (to the point that sea level was 3 meters higher than the current level)?
Does climate change exist? Absolutely. Is there compelling evidence that it is caused by human actions? No. Is this lack of compelling evidence an excuse to be wasteful and inefficient? No, but it does mean that a lot of people are panicking over what amounts to FUD.
ZV
Well considering that the PPM of CO2 in the air is at all time highs (not for the earth's whole history but from the time we (mammals) started taking over, I think there is strong evidence to suggest we're the problem. I mean think about it, we're talking something that was completely sequestered for millions of years, during a time when they had no such Ice caps and lots of "swamp land" and are adding it back to the atmosphere. It's like we want the planet to be like the way it was millions of years ago. If you notice, after the Dinosaurs were killed off by the meteor and a lot of the carbon from that era became sequestered, while there have been temperature fluctuations since then, most of them have been towards the "Ice Age" type not the warming trend we're seeing now. Yes there were obviously warming trends that started AFTER the Ice Ages had already happened but I don't believe there were any warming trends after the result of a Warming Trend which tapered off, I.e what we're in now. Unless solar ouput decreases, I see no reason for global temperatures to not continue to rise.
Funny, those who like to argue against global warming love to cite the articles in the 60s when some people were panicking over
global cooling, like as if it wasn't a real threat. Problem for them is that IT WAS A THREAT. There was a strong cooling period after that meteor that wiped out the Dinosaurs and the reason being was that a lot of particulate matter entered the air blocking off the solar radiation, therefore cooling down the earth. So, how was that relevant in the 60s? Well we had a lot of industry and whatnot (cars, etc.) belching out particulate matter because there were no regulations on emissions. Machines belching out all of that pollution parallels in some ways what the meteor did several million years ago when it launched all of that PM into the air.
The reason we didn't notice the CO2 problem in the 60s was because of the Particulate Matter that was launched into the air had stronger effect of blocking out radiation compared to the CO2's ability to retain the radiation. So it was only after we cleaned up our emissions did we realize we had another problem all along and that it was being masked by the first problem that we solved. It's kinda like giving a disaster victim a bath only to discover later on that they're missing a large chunk of their leg.