We have the great pleasure of having Kris Shaw from U.Oslo. They are a world leading expert in tropical geometry, so all the grad students that have been through my semester long bambling and rambling on the topic have a chance to hear the real deal.

Intersection Theory on the Moduli Spaces of Pseudostable Curves

The Noether-Lefschetz loci formed by determinantal surfaces in projective 3-space.
Cesar Lozano Huerta, from U. Oaxaca/ Harvard