The last couple of weeks have been so busy that I am only now catching up with posting our lab news, including welcoming our two new lab members, Mark and Alexandre. Mark is a biochemist who will be visiting the lab during the next few months for an exchange about the evolutionary versus biochemical implications of empirical fitness landscapes. Alexandre has joined us as a postdoc; he is an evolutionary modeler who is particularly interested in the role of Dobzhansky-Muller incompatibilities in speciation and hybridization.