fertility rates are dropping worldwide. At some point in the next 30 years, it is expected to fall below replacement level. Check out this graph comparing fert

fertility rates are dropping worldwide. At some point in the next 30 years, it is expected to fall below replacement level. Check out this graph comparing fertility rates. China and Iran (!) now have fertility rates below that of the U.S. http://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&met_y=sp_dyn_tfrt_in&idim=country:USA&dl=en&hl=en&q=fertility+rate#ctype=l&strail=false&bcs=d&nselm=h&met_y=sp_dyn_tfrt_in&scale_y=lin&ind_y=false&rdim=region&idim=country:USA:CHN:IRN&ifdim=region&tdim=true&hl=en&dl=en http://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&#...