It was facts that helped him explain how the world works. But it was curiosity and commitment that made the late Hans Rosling, author of the bestselling book Factfulness, the most popular researcher of our time. This is Hans Rosling's own story of how he became a revolutionary thinker, and takes us from the swelter of an emergency clinic in Mozambique, to the World Economic Forum at Davos. Written in collaboration with Swedish journalist Fanny Hargestam.