Johannes is in Berkeley, CA, for the next three days for the Humboldt Kolleg on New Vistas in Molecular Thermodynamics. He is going to give an invited talk today at the beginning of the Session on Fundamentals of Chemical Design and Engineering titled Machine Learning the Structure-Property Relationships that Define Chemistry. The Kolleg will also celebrate the 90th birthday of Professor John M. Prausnitz, one of the pioneers of Molecular Thermodynamics.