It won't always be 2ppm/year. The rate increases yearly. We can expect 1000ppm somewhere around 2100, perhaps a bit after. Of course 1000ppm has far nastier ef

It won't always be 2ppm/year. The rate increases yearly. We can expect 1000ppm somewhere around 2100, perhaps a bit after. Of course 1000ppm has far nastier effects than just those on human cognition.