Cologne Graduate School of Chemistry (CGSC) Ph.D. Symposium with lectures by young new colleagues at the Department of Chemistry: Prof. Dr. Stephanie Kath-Schorr, 17:00 "Xeno nucleic acids: Not from outer space but from the chemist's bench” Prof. Dr. Malte Gather, 17:30 “A Light Touch: Small optics take on big biomedical questions” Prof. Dr. Marcel Schubert, 18:00 "May the photons be with you: Awakening of the biolasers”