My research seeks to better understand the origin and maintenance of biodiversity with an emphasis on evolutionary consequences of environmental variation. To address this question I rely on integrating ecology, physiology, and genetics to understand how organisms respond to environmental change. However, the evolution of phenotypes and species boundaries are often strongly influenced by sexual selection. So I also draw on my experience in behavioral ecology to test the relative contributions of natural and sexual selection at different biological levels. Ultimately, many of my projects come back to understanding the role of temperature in fundamental evolutionary processes and the extent to which sexual selection impedes or fosters adaptation to the thermal environment.