There is a major cycle, however, that will eventually prevail. Sometime in the next few thousand years (possibly in the next decade), we will start to enter the next ice age. The Earth will not get much warmer than it is right now, before the next ice age starts.
CO2 levels do not drive temperature changes, it is the other way around, with about a thousand year time lag. The current increases in CO2 have nothing to do with human activity, but rather are caused by the Midieval Warm Period. We have about 250 years to go on this cycle.
Our air is CO2 depleted right now. All Earthly plants have evolved to use CO2 levels 2 to 5 times higher than today's. When exposed to higher CO2 levels, plants grow faster and require less nutrients and water.
Crop yields have improved a lot over the last 150 years, largely due to improvements in technology, but a substantial portion of that improvement is due to rising CO2 levels.
Many scientists are well aware of these facts, but all the press goes to lying panic mongers who make a very good living by dispensing misinformation.
Exactly. There are hundreds of variables which have significant contributions to climate, and we are only guessing at how much each one contributes. Besides the fact that the climate data is not really all that accurate, it is impossible to isolate each variable. The idea they could conclusively say CO2 is the dominate variable effecting climate change is completely absurd and only basis is the bias of the scientific community which gets billions in research dollars to say so. No honest scientist based on the data could conclude CO2 is even a major factor, let alone a dominate factor.