Originally Posted by
rda
Look, you are scaring yourself for no reason here.
You are right to be talking about runaway reactions because they are actually the core of the issue. Without those runaway reactions (also called positive feedback loops), the increases in temperature due to raising CO2 levels are not scary at all - because the direct effect from increasing the concentrations is logarithmic (if the first doubling of CO2 warms by X degrees, it takes one more doubling = twice as much increase to warm by another X degrees). The entire argument regarding warming being supposedly dangerous is based on the supposed existence of positive feedback loops that somehow accelerate themselves. But the proponents of global warming (as well as the skeptics) have been looking for those positive feedback loops for 30 years and had very limited success overall. There were several candidates, some were shown to be dead-ends, others are "work in progress", but the long and short of it: this is where science actually came up pretty much empty. The increases in real temperatures have not been scary and they have not been showing much in the way of acceleration. There are some theories regarding the acceleration possibly coming later, but there is never a shortage of theories like that - and no, the foundations aren't too strong.
So, again, yes, there is warming and yes, it is partly created by humans. But you are just scaring yourself for no reason if you think that there is some tipping point yet alone that we are supposedly past it or are nearing it. None of this has been shown.