Professor Hans Rosling, the statistician and epidemiologist who brought dramatic flair to animated visualizations of dry public health data, has died. For much of the public not steeped in the arcana of epidemiological data sets or data visualization techniques (a.k.a. normal people), Rosling burst onto the scene in 2010 as part of the BBC special "The Joy of Stats." "Hans Rosling's famous lectures combine enormous quantities of public data with a sport's commentator's style to reveal the story of the world's past, present and future development," the BBC wrote at the time. Rosling's work was a driver of some of the explosion of interest in data visualization in the news and nonprofit sectors starting in the early 2000s. His BBC special and TED Talks sparked an interest in "storytelling with data," rather than just with words. Not every data set tells as clear or compelling a story as Rosling's wealth and life expectancy numbers. Rosling's genius wasn't just in the flashy presentations he gave. It also derived from knowing exactly what type of data would lend itself to such flair. The other thing Rosling's moving chart did incredibly well was to allow viewers to grapple with multiple dimensions simultaneously, with ease. The loss of Rosling hurts especially in this moment, as politicians and media outlets wrestle over what's fake and what's real. Above all Rosling was an advocate for a "fact-based worldview," one which his family says they'll carry on at the foundation he started.