Human population projections

Human population projections are attempts to show how human populations might change in the future. These projections are an important input to forecasts of the population's impact on the planet and humanity's future well-being. Models of population growth take trends in human development and apply projections into the future. These models use trend-based-assumptions about how populations will respond to economic, social and technological forces to understand how they will affect fertility and mortality, and thus population growth.