Also keep in mind that historically speaking, we're at a fairly low level of CO2 from what the Earth's atmosphere has been. Are things changing? Yes.
Are humans to blame? Well, to a certain extent, yes. Much of what is happening, is happening due to natural cycles. Yes, mankind is aggravating the process. At the same time, I don't see any country in the world placing a ban on automobiles or power plants. However, the natural cycle going back many, many years consisted of what life here was like WITH a lot of ice in place. Yes, the ice is melting. Yes, mankind has SOME amount of effect on that. How much is debatable, and would inevitably delve into politics being thrown into the mix.

I hate talking politics anyhow - almost as much as my wife hates me talking politics!
Anyway, the more the ice melts, the more rapidly it continues to melt. This is normal, basic physics. Another part of the problem is/has been the Ozone layer and CFC's, which allowed TREMENDOUS amounts of solar heat into the atmosphere.
But let's also not forget that there used to be MANY pools of petroleum sitting right on the surface of the ground. Also, lots just below the surface. The farther down one went, the more petroleum was there. Now there is a lot less. So what effect is that having on the environment? Wildfires can no longer spark pools of oil to burn for days/weeks/months. Volcanoes and other Earth hiccups and belches do not set off as many oil reserves into the atmosphere as they once did, as we have done it over a more regulated time frame.
There's so very much more to this story than anyone is saying - and that's because we (mankind) do not yet have all of the pieces to the puzzle in order to fully understand how the Earth works and how our actions have affected such workings. In other words, the debate can continue indefinitely, but there can be no real winner. Not yet, anyhow. Maybe one day we (science) will have enough understanding - but also keep in mind that much of the understanding we DO have is due to petroleum drilling. ...Which has gotten to be very 1-sided. So much so that other entities have done their own research, which is also very 1-sided; each side trying to promote their point.
Me? I'm stuck in the middle. I'll be long gone before the debate is even close to settled. My body is old and broken, and as long as we no longer have to rely on horse-n-buggy to make the 50-mile trip to town in the NW Minnesota snow, I'm sticking with my 4WD pickup!
