Leslie Aiello

Leslie Aiello is a British-American paleoanthropologist best known for co-developing the expensive tissue hypothesis with Peter Wheeler. This hypothesis proposes that the evolutionary expansion of the hominin brain was made possible by a corresponding reduction in the size of the digestive tract. It fundamentally changed how scientists view human evolution.

It states that brain tissue is metabolically very expensive, requiring a vast amount of energy to maintain. To afford larger brains, early hominins had to evolve smaller guts. This dietary and anatomical shift was made possible by eating higher-quality, easier-to-digest foods like meat.

Yes, she served as the president of the Wenner-Gren Foundation for Anthropological Research. Before that, she was a highly respected professor and researcher at University College London. At Wenner-Gren, she heavily influenced the direction of global anthropological funding.

She is a British-American paleoanthropologist with a strong foundation in evolutionary biology. Her research primarily focuses on the evolution of human adaptation, physiology, and diet. She combined biological sciences with traditional anthropological studies to examine human origins.