Michael Nielsen, a 37-year-old, Australian quantum physicist, just completed a 17-city tour in seven countries, doing a series of presentations to promote the open sharing of data and research to advance science. On top of that, he spent a month traveling to promote his book,Reinventing Discovery: The New Era of Networked Science (Princeton University Press, 2011). His talk of changing the culture of science has drawn audiences beyond typical academics. Nielsen’s passion, credibility as a scientist, and knack for storytelling has helped propel the issue of Open Science into the mainstream.