It will be hard to convince me or any other reasonably intelligent person that the earth being a degree or fraction of a degree hotter in another million years or so is a bigger threat than terrorism and quite a few other pressing problems. The earth has long had droughts, famines, hurricanes, etc, etc. They didn't just start once we started pulling fossil fuels out of the ground.
It will be hard to convince us that it's all our fault, or that we can do anything about it. Especially when those who tell us this are flying around in private jets, owning fleets of limos and high-powered sports cars and luxury cars, living in mansions, using more than their share of conventional fuel and electricity, etc.
It's all a big front for carbon taxation and alt energy interests.
You got the timeline wrong though, it's in the next 100 years, that isn't accounting for the permafrost melt that will accelerate that beyond belief. it's a couple degrees by the end of this century, recent reports were not good, we are on worst case scenario trajectory.
Just stating the facts will help, it's happening, we are driving it (carbon has never risen this sharply, ice cores, tree rings, oceanography confirm this). We are simultaneously increasing the source (fossil fuels) and reducing consumers of carbon (trees etc, massive deforestorization). It's a huge potential and current issue, then we find a solution. One that is sensible, logical and implemented in a controlled manner.
