Pleased to have passed the Gapminder test .... it certainly helps to have read Hans Rosling's excellent and interesting book, 'Factfulness', first! Though that was a couple of months back. ....

Receiving the Certificate, proudly displayed below, they ask that we encourage others to take the test also (something like a 'chain letter' then?):

http://forms.gapminder.org/s3/test-2018