![Michael Pershan on Twitter: "I found a piecewise function in the UN world population projections. This is for how fertility (how many kids ya have on average) changes as countries develop. https://t.co/TrsHj8Wnjs Michael Pershan on Twitter: "I found a piecewise function in the UN world population projections. This is for how fertility (how many kids ya have on average) changes as countries develop. https://t.co/TrsHj8Wnjs](https://pbs.twimg.com/media/EoWogelXIAkefvv.png)
Michael Pershan on Twitter: "I found a piecewise function in the UN world population projections. This is for how fertility (how many kids ya have on average) changes as countries develop. https://t.co/TrsHj8Wnjs
![Patrick Gerland on Twitter: "New UN demographic profiles based on #WPP2019 probabilistic projection results for 201 countries/areas and 50 major aggregates: online plots and highres PDF key demographic indicators with plots, data Patrick Gerland on Twitter: "New UN demographic profiles based on #WPP2019 probabilistic projection results for 201 countries/areas and 50 major aggregates: online plots and highres PDF key demographic indicators with plots, data](https://pbs.twimg.com/media/ELxTSmNW4AEchuG.png)
Patrick Gerland on Twitter: "New UN demographic profiles based on #WPP2019 probabilistic projection results for 201 countries/areas and 50 major aggregates: online plots and highres PDF key demographic indicators with plots, data
Deaths per one million population in selected countries (Logarithmic... | Download Scientific Diagram
![Life expectancy at birth of women and gender gap, 1980-2020. (Source:... | Download Scientific Diagram Life expectancy at birth of women and gender gap, 1980-2020. (Source:... | Download Scientific Diagram](https://www.researchgate.net/publication/365755783/figure/fig1/AS:11431281102480972@1669470766711/Life-expectancy-at-birth-of-women-and-gender-gap-1980-2020-Source-United-Nations.jpg)
Life expectancy at birth of women and gender gap, 1980-2020. (Source:... | Download Scientific Diagram
![S1. UN Global and Regional Population Projections | Land, Water, Food, and Climate | Civil and Environmental Engineering | MIT OpenCourseWare S1. UN Global and Regional Population Projections | Land, Water, Food, and Climate | Civil and Environmental Engineering | MIT OpenCourseWare](https://ocw.mit.edu/courses/1-74-land-water-food-and-climate-fall-2020/4310d412c98328c449ef1f45cc020b22_FigS112nn.jpg)