Climate Change

[kandrathe]

Were these eras from 600 Million years ago?

From Wikipedia;
Note the section -- Past variation

This sentence caught my eye -- "Assuming a future absence of human impact influencing releasing of sequestered carbon, the long term natural trend is for the plant life on land to die off altogether, as most of the remaining carbon in the atmosphere becomes sequestered in the Earth."

I read that as... when volcanism subsides due to a slow cooling of the mantle, the trend without human intervention will be for most CO2 to become sequestered over millions of years resulting in the extinction of life. Now, certainly we don't want to swing it the other way either. My sense is that there are plenty of natural actors in the ecosystem that will react to an increase in CO2, resulting in more sequestration. I worry more about the rapid acidification of the oceans.