video from Hans Rosling

today in class ww watched a video about population and migration. this video featured a man named hans gosling, who proceeded to explain the statistical analysis of the population and migration. he teaches a college course on global health. hans rosling constructed this pretty cool chart which had two separate line axises with the X-axis as income or wealth and the Y-axis as lifespan or expectancy. he described the lower, left hand side as the poor and sick. he then described the upper, right hand side as the rich and wealthy. in this demographic transition chart that he showed in his video, the birth rate, death rate, and total population were given over time in five different stages. stage one the country would be experiencing a stable or slow RNI due to the high birth rate and high death rate, stage two would be experiencing high birth rate and a rapidly falling death rate. the united states was in stage one around the early 1800's.