My research interests broadly encompass comparative vertebrate physiology. To a large extent I have focused on energetics and endocrine issues encountered in physiologically stressful environments and, more recently, changes in these variables with aging. In this regard, I have worked with a wide variety of species including marsupials, mole-rats, tenrecs, bats, subterranean mammals, and primates both in the field and in a laboratory setting. Although, I have used many different species, specifically chosen to answer a particular physiological question, in recent years most of my research has focused on naked mole-rat biology and their novel use in aging and cancer research.