The KITP in Santa Barbara, a few steps from the beach, is running a semester long program on Mathematical Structures in String Theory that started this past week. Some of the talks are already on-line.
On the other coast, as part of the Simons Workshop at Stony Brook, Witten will be giving a talk at Smith Point beach on “Gauge theory and the Geometric Langlands Program”. This sounds like it might be very interesting and mercifully off the main topic of the workshop, which seems to be swamps not beaches.
