Sustainable and the meaning of "deal with" are indeed loaded concepts. Some people would say 1 billon or less, others at least 15 billon at first world standard

Sustainable and the meaning of "deal with" are indeed loaded concepts. Some people would say 1 billon or less, others at least 15 billon at first world standards of living. http://www-formal.stanford.edu/jmc/progress/ http://www-formal.stanford.edu/jmc/progress/ I think demographic projections say world pop will peak in the ballpark of 10 billion (for a while, anyway).