Ask A Nobel Laureate in Chicago

My crocheted hallucigenia wants you all to know that Dr. Leon Lederman will be answering questions in front of the Wrigley Building (perhaps soon to be the Google Building) on Saturday, September 24.  Noon to 2:00 p.m.  Link. 

Earthquake?

Hand to God, I just felt THIS in Chicago.  Two distinct waves of very mild shaking.  Might have been more, but it took a while for me to notice and realize there were no trucks or freight trains nearby.  How about you?