Exact crossing numbers April 28 to May 2, 2014 American Institute of Mathematics, Palo Alto, CA Organizers: Jozsef Balogh, Silvia Fernandez-Merchant, and Gelasio Salazar Description: This workshop, sponsored by AIM and the NSF, will be devoted to tackling several long-standing open problems in the field of crossing numbers of graphs. Deadline: December 1, 2013 Details: http://aimath.org/workshops/upcoming/exactcrossing