 He started new courses on global health and co-authored a textbook on global health that promotes a fact-based worldview.Rosling's son, Ola Rosling, built the Trendalyzer software to animate data compiled by the UN and the World Bank that helped him explain the world with graphics.Rosling co-founded the Gapminder Foundation together with his son Ola and daughter-in-law Anna Rosling Rönnlund to develop Trendalyzer to convert international statistics into moving, interactive graphics.