The Â鶹AV Office for Science and Society has developed over 60 lectures on a host of topics of interest. These lectures are offered to educational institutions, study groups, social clubs and professional organizations with the level, format and length of the presentations tailored to fit any audience. The material is normally presented with slides and therefore a screen is required. Listed below is a description of some of the most popular topics. (Note: depending on the lecture, some may be given in French).