I like to think of this in terms of carbon debt. It is surprisingly easy to calculate the avg. per-capita lifetime carbon debt accrued by someone living in a specific country. It’s a fun metric to compare generational differences (e.g. baby boomers vs millennials) & location-based differences (e.g. USA vs.China) ... last time I did this I can to a carbon debt of EUR 20K for my generation. Which in the grand scheme of things is not all that bad.