[orwin]

> The world population is projected to peak around 2100

If you only take natality prospect, yes. However we're on our way to hit +3° average around 2080. The average temperature difference between the last ice age and our age is ~5° for comparison. The agricultural change this 3° will have unforseen effects (well, not really unforseen, look what happened circa 2010 in Egypt and Tunisia), without taking into account the groenland melting (this is unavoidable anyway) and the wetbulb temperature being reached more than 100 day a year in eastern India/Bangladesh (and Florida won't be any better, if i remember correctly it will be ~80day/year for most of southern Florida). This will probably regulate the population a bit faster than predicted.