So over the past 500 million years, CO2 levels, blah, blah, blah
The only thing that is relevant for humans is fairly recent climate variations and your latest post is quite irrelevant.
You are definitely trying to play a game of Whack-A Mole. Every time one of your bogus or irrelevant (like this one) hard-core denialist playbook comments is debunked, you don't acknowledge the correction of refutation, but rather move on the the next false or irrelevant claim. And now you are accelerating into a Gish-Gallop in a futile attempt to avoid reality.
Are you aware that you have not refuted a single bit of the core collection of evidence that supports AGW/CC and global warming theory?
Although this thread is a microcosm of the denialist/realist battles that raged for years at Dr. Ricky Rood's climate blog, the hardcore AGW/CC denial tactics have not changed. The litany of anti-science b.s. being trotted out here is pathetic and has been debunked many times over.
Anthropogenic global warming and climate change is real, and is supported by the entire earth sciences community except for a handful of outliers who have done research and submitted or published papers whose claims were quickly demolished. Although some steps are being taken here and there around the globe to reduce CO2 emissions, I do not believe that serious action will be taken until a tipping point is reached - or human civilization experiences a major black swan event that has global consequences.
In the meantime, kick back, open a beer or bottle of wine, and enjoy your day-to-day life. When reality kicks in for humans on a large scale, the ride is going to be rough. But all individuals can do right now is support efforts to make appropriate changes in energy production and use, and help to elect politicians who at least try to be rational. (Good luck with that!)