A conference on the above theme will take place June 17-20 at the Pacific Institute of Mathematical Sciences (Alberta). The first two days will have several goals, with the latter two days devoted to workshop-like opportunities for further interaction among the participants. The funding from NSF will support travel grants for about 5 younger speakers, and travel support for a similar number of postdoctoral students and graduate students. A proceedings will be published, to further disseminate information.