Previous predictions of teacher shortages later in this decade based mainly on demographic projections of increased elementary - school enrollment have been called into question by recent federal demographic surveys. (edweek.org)
For their study the researchers developed a reference demographic projection scenario based on actual urban planning and compared its results to two other hypothetical scenarios using different sets of local constraints on residential development. (sciencedaily.com)
The most recent U.N. demographic projections show world population growing to 9.3 billion by 2050, an addition of 2.3 billion people. (treehugger.com)