SciCafe: At the Root of Human Hair

Why do humans have the bulk of our hair on our heads, not our bodies? This important but often neglected evolutionary question is central to the work of Tina Lasisi, a biological anthropologist at the University of Southern California.

In this SciCafe, Lasisi teases out the mysteries behind why humans have scalp hair and why we may have developed different hair textures as we’ve evolved. She shares the unique methods used in her research, including the use of robots with wigs to understand the thermoregulatory role of scalp hair and its protection against solar radiation, as well as her insights on why tightly curled hair is unique to our species.

SciCafe: At the Root of Human Hair is presented in collaboration with The Leakey Foundation.