is the weather severe enough?, page-230

Not an answer. Epochal changes have causes. Without talking about causes, your mention of epochal change is just ignorant bleating.

For example, about 250 million years ago there was an epochal increase in CO2. It was caused by higher than usual volcanic activity which pumped heaps of CO2 into the atmosphere.

Oh, and that event 250 million years ago also caused major extinctions world wide.

Now that you've admitted there is one, what is the cause of the current epochal change in CO2 levels?

My money is on humanity burning fossil fuels.