Hans Rosling : 200 years in 4 minutes

Today we watched a video about a guy named Hans Rosling. He teaches global health. He was animating data in real space. He talked about things like how poor countries transformed into wealthier countries over time. For example in 1810 most of the countries in the world were in the poor and sick section of the graph and had a life expectancy of below forty years. When the Industrial Revolution started, countries started moving up the graph because they were building better economies. World War 1 and the Spanish Flu epidemic were major factors in why the life expectancy dropped in some countries. Hans was a very optimistic guy and believes that the world will keep getting better.