by 2070, the global fertility rate is expected to fall below the global replacement fertility rate — that’s the average number of children each woman needs to give birth to for the population to replace itself from one generation to the next — according to a recent analysis of United Nations global population data from the Pew Research Center. The current global replacement rate is 2.1 births. The current global fertility rate is 2.5, but is expected to fall to 1.9 by 2100.
A recent Canadian study put the timing of the reversal as early as 2049.
At some point, it’ll be needed to save the earth from humans. The real reason it’s an issue is all the government debt and pension systems require population growth to afford them.