I participated to the contest « Ma thèse en 180 secondes » (« Three minutes thesis »). The principle is simple: summarize my thesis in a vulgarized and accessible way in no more than 3 minutes (detailed rules here, in French).
Unfortunately, I was eliminated at the finale of UCLouvain. But if you want to learn more about what I have been doing during 4 years of PhD (in French), the video is right here!