Research in Wiens’ lab has three main areas: 1) using an integrative phylogenetic approach to address general conceptual questions in evolutionary biology and ecology, 2) the theory and methods of phylogenetics, and 3) the phylogeny, evolution, and ecology of reptiles and amphibians. Within these general areas, we address a variety of specific topics, including species richness patterns, speciation, niche evolution and conservatism, life-history evolution, adaptive radiation, ecological diversification, rates and patterns of morphological change, phylogenomics, and responses of species to climate change. We combine collection and analysis of genetic, morphological, ecological, and physiological data in the lab and field) with bioinformatic, computational, and theoretical approaches.