Just something I've been thinking about recently. Climate advocates clearly need some kind of new rhetoric when trying to convey the magnitude of emissions. In my experience, the vast majority of people do not care when you talk about x amount of CO2 emissions.
For example, consider this sentence: "This coal power plant releases 5 megatons of CO2 a year". The average person thinks (and most importantly,
feels) nothing when hearing this. They don't know how much or little that is, and they don't know what effect it has. This makes the statement practically worthless and will not convince anyone.
On the other hand, we do need some kind of objective metric to compare things. If we don't talk about exactly how much lower the emissions from green energy sources are, or how much something emits, then we cannot easily convince anyone that these things are good or bad. An example are wind farms. I've heard some people say that they are actually bad for the environment because they take a lot of energy to construct, dry up peat bogs which releases CO2, only last so many years and then need to be reconstructed etc. You need to be able to point to actual numbers in order to show that despite these flaws, wind turbines are still much, much cleaner than fossil fuel plants.
So what is the solution? How can we convey emissions in an objective way, but still have that message actually reach the listener and make them think about it? Ideally the rhetoric should target not just the logical part of one's brain but also the emotional part. This is far more effective for many people.
My preliminary solution is to translate CO2 emissions to death counts. Let's use the earlier example:
"This coal power plant kills 1130 people a year".
Now that sounds much more impactful to me, and I think it will turn far more heads.
How did I reach this number?
This study has estimated that for every megaton of CO2e released, 226 people will die prematurely within this century. Of course this is very approximate, but if we consider that the effects of climate change will last longer than just this century (if society even survives that long, that is), and also that it causes a lot of suffering that isn't actual death, I'd say the figure actually undersells it. But it's good enough, and can easily be backed up with sources.