I am an organizer for two seminars.  Information on these seminars are as follows:  

The ISERP Interdisciplinary Graduate Student Seminar:
Website:  https://blogs.cuit.columbia.edu/igss/
Facebook: https://www.facebook.com/IIGSSColumbia/
Look out for our next Call for Proposals in mid-November!

The Columbia Economics Industrial Organization Colloquium:  Website: https://sites.google.com/site/columbiaiocoll/
Email me if you would like to be included on the Industrial Organization mailing list.