Jeroen Raes is a bionaut, he researches the human microbiome. What he's discovered in his lab at the Flanders Institute of Biology could herald a major breakthrough not just in gastro-intestinal medicine, but in our fundamental knowledge of the human biology. It turns out that there are only three different types of gut bacteria and, just like blood groups, the three types are totally independent of race, sex, age or diet. Such a baffling finding leads to more research of course and Raes is currently testing his idea on a larger group . The implications for Crohn's Disease or obesity could be dramatic. www.tedxbrussels.eu In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)