Dr. Clark Spencer Larsen is an author, American biological anthropologist, and educator. His work focuses on bioarchaeology, the study of human remains from archaeological settings. Although his interests span the entire record of human evolution, his research largely focuses on the last 10,000 years, a period of dynamic change in wellbeing, health, and lifestyle, much of which relates to overcrowding, population increase, and nutritional decline that co-occurred with the transition from hunting and gathering to agriculture, creating living conditions that humans are grappling with to the present day.