To add a seminar or a talk, please email Aram directly. If you want to see math seminars of all disciplines, you can try the following website.
If you want to see old seminars: Videos of Past Conferences/Seminars
Due to committments, I no longer have time to upkeep this list. The website Research Seminars is a great source for all online seminars if people want another source.
I stand in solidarity with the black lives matter movement. You can read my full statement here.