Carole Hooven, an evolutionary biologist from Harvard and author of 'T: The Story of Testosterone', dives deep into the complexities of gender and hormones. She discusses how testosterone and estrogen shape behaviors and identity, while exploring the biological underpinnings of gender differences. The conversation touches on contemporary issues like transgender participation in sports and the societal perceptions of masculinity. Hooven emphasizes the need for open dialogue and a nuanced understanding of biology's role in shaping human experiences.