The sequence of the pictures should be reversed and there should be notes at the bottom of the figures. +150 should read famine, +300 not enough, +450 should read just about enough, and AMB should be close to death. People don’t understand how vital CO2 is to our ecosystem and that we are still living in a very CO2-poor world, in spite of the rise in CO2 lately. It’s also a very unusual state of affairs in planetary history as for the vast majority of this planet’s life CO2 was a good deal higher than today.
Unfortunately, too many individuals and governments are locked into the false mindset that CO2 is a pollutant and so research has progressed but little on this front of late.