I have given a few talks (in French) to students in their early undergraduate studies (CPGE, first year ENS students). Feel free to contact me if you would like to set up a talk for your students (in French or English).
The life and death of stars
Conference for high-school and CPGE students, Lycée Pierre de Fermat, Toulouse, March 2017 PDF
The Interstellar Medium, a Galactic ecosystem
Conference for high-school and CPGE students, Lycée Buffon, Paris, December 2016 PDF
The large ground-based instruments for 21st century radio-interferometry