The Columbia University Science Fiction Society (CUSFS) is hosting a talk with artist Dennis Calerotonight at 7 pm:

This event is at 207 Milbank Hall in Barnard College, Columbia University. If you’re not a student, Milbank Hall is the rightmost building when you enter the college gates of Barnard College, Columbia University, at 117 and Broadway. The address of the college is 3009 Broadway, New York, NY 10027. Milbank Hall border 120th, but you need to enter the 117 gates to get there.

A map with Milbank is here: https://barnard.edu/sites/default/files/inline/bc_map_10_0.pdf

Calero has done it all and seen it all, so this should be quite entertaining.