In the spirit of ideas worth spreading, we will witness TEDxLjubljana 2018 for the ninth year in a row, where speakers and participants will shed light on the (un)known. Enthusiasts will listen to ten speeches on various topics this year - ideas will shed light on the fields of laughter, microbiology, architecture, health, plants, suicide and the menstrual cycle, and you will also hear something about air quality and particle physics. New knowledge is waiting for you...