Well, yes and no. Logarithmic curves essentially hit a point where they stop having a meaningful increase for each additional input, and we're nearing that point. Meaning that even if the levels continue to rise, they have an irrelevant impact.
As a corollary, are you familiar with the fertilization effect of Co2? Additional Co2 in the atmosphere causes a significant (both literal and statistical) increase in the growth of plants - meaning that the earth has a growing capacity to remove Co2 from the atmosphere.
I don't deny global warming, but the question we really need to understand and answer is: Is it bad? As I mentioned, many catastrophists have said it would be terrible, yet none of the predictions have ever been remotely accurate. Climate related deaths are dropping as the temperature changes and our technology improves.
Humans fundamentally change their environment. It's how we survive. We adapt, and every indication leads to the notion that we will continue to do so, even as our planet warms (or fluctuates, as it has always done).
Thanks for responding in a positive way!
RE: Why we haven't found aliens yet