I have participated in the contest "Tu tesis en 4 minutos" (your PhD thesis in 4 minutes) organized by the Technical University of Madrid (UPM) in the context of "Symposium Cuéntanos tu tesis" (Tell us your PhD thesis symposium). This time I did not win one of the prizes, but I could know the works of my colleagues from other disciplines at the university and explain them my own work. And I think my presentation was not as bad as you would expect... :P