Abstract

These are the proceedings of the 30th annual event of IDEAS. When the first of this series was planned, I had no idea that it would successfully continue for all these years. Some members of the original and current steering committee, including myself, are stepping down after this meeting. This is also going to be the last, of over 40, meetings of C3 S2 E and IDEAS I would manage as I am soon to retire! It was a honour to have met hundreds of colleagues, many just starting their career. I am glad that IDEAS could have helped them in their early development.