Among other things he earned his PhD degree on documenting a before then unknown paralytic disease later named Konzo. Besides being a doctor Rosling has a second passion: statistics. Feeling dissatisfied with the public availability of facts on global development, health, the environment etc. he started the Gapminder foundation. This non-profit organization tries to collect data from a variety of public sources and make it available to the general audience in one easy to access location. Furthermore they developed a processing tool called Trendalyzer to be able to make the trends insightful. A web based version of this tool can be found here.